BIS 2003

B U R E A U O F I N D I A N S T A N D A R D SMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

IS 5 : 1994(Reaffirmed 2000)

Edition 5.1(1995-09)

Price Group 6

Indian StandardCOLOURS FOR

READY MIXED PAINTS AND ENAMELS

( Fourth Revision )(Incorporating Amendment No. 1)

UDC 667-63312

Paints (Other than Industrial Paints) and Allied ProductsSectional Committee, CHD 020

F O R E W O R DThis Indian Standard (Fourth Revision) was adopted by the Bureau ofIndian Standards, after the draft finalized by the Paints (Other thanIndustrial Paints) and Allied Products Sectional Committee had beenapproved by the Chemical Division Council.This standard was first published in 1949 and since then it has beenrevised three times in 1955, 1961 (and also reprinted in 1969), and 1978(also printed in 1984). Through the use of the reprinted version of thestandard for over five years colour fading was noticed in some shades.The concerned Sectional Committee, therefore, decided to prescribeMunsell values in terms of hue, lightness value graduations (value)and chroma according to the calibrated scales of the Munsell colourAtlas as records of the original colour values of individual shades forreference. Accordingly, approximate Munsell references andColourimetric values for all colours are given in Table 1. TheColourimetric values expressed in terms of Trichromatic System arealso given in Table 1. An explanation of the Munsell system of colourreferences and glossary of colour terms is given in Annex A.In the third revision an additional colour shade scamic, IndianStandard Colour (ISC) No. 294 in semi-gloss was included with thespecific approval of the Ministry of Defence, Government of India. Thetitle of the standard was modified to include the word enamels. Thename of the shade ISC No. 415 was changed from Imperial Brown toIndia Brown and ISC No. 633 from RAF Blue-Grey to AF Blue-Grey.In this revision, four new colours, namely, Phirozi (ISC No. 176) and SatinBlue (ISC No. 177). Bus Green (ISC No. 299) and Steel Grey (ISC No. 698)have been added in Blue, Green and Grey colour groups respectively. Trichromatic values determined on spectro photometer have also beenincluded in this revision for each colour shades. Consequently definitionof relevant terms have also been added in Annex A.In the preparation of this revised standard substantial assistance hasbeen made available in measurement and checking of colour values byIndian Institute of Chemical Technology, Hyderabad and activecollaboration of the Panel of referees comprising experts from NationalTest House, Calcutta; Indian Institute of Chemical Technology,Hyderabad; Ministry of Defence (DGQA), Kanpur; Indian PaintsAssociation, Calcutta; Shalimar Paints, Calcutta; Berger Paints,Calcutta; and Jenson and Nicholson, Calcutta in matchings of colourshades, which are thankfully acknowledged. Assistance has also beenderived from BS 381 C : 1988 Colours for identification, coding andspecial purposes and BS 1611 : 1953 Glossary of colour terms used inscience and industry issued by the British Standards Institution.This edition 5.1 incorporates Amendment No. 1 (September 1995). Sidebar indicates modification of the text as the result of incorporation of theamendment.

IS 5 : 1994

1

Indian StandardCOLOURS FOR

READY MIXED PAINTS AND ENAMELS

( Fourth Revision )

1 SCOPE

1.1 This standard covers 104 colours for ready mixed paints andenamels grouped under Blue; Green; Yellow, Cream and Buff; Brownand Pink; Red and Orange; Grey; and Violet.

2 TERMINOLOGY

2.1 For the purpose of this standard, the definitions of colour termsgiven in Annex A of this standard shall apply.

3 NUMBERING SYSTEM

3.1 Three digit numbers have been given to the colours, of which thefirst digit indicates the group of colours according to the seven broadcolour divisions mentioned in 1.1, each group having a range ofnumbers allotted, namely :

3.1.1 Whenever new colours are required to be added in the aboveranges, these will be assigned numbers which do not overlap theexisting numbers.

Blue ... ... ... 100-199

Green ... ... ... 200-299

Yellow, Cream and Buff ... ... ... 300-399

Brown and Pink ... ... ... 400-499

Red and Orange ... ... ... 500-599

Grey ... ... ... 600-699

Voilet ... ... ... 700-799

IS 5 : 1994

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4 MUNSELL REFERENCES AND COLOURIMETRIC VALUES

4.1 Approximate Munsell references for each colour are given inTable 1 quoted by the respective reference number. The IndianStandard Colour (ISC) number shall always be used for identifying acolour, and Munsell references are given for guidance and as an aid incomparing individual properties in terms of hue, value and chroma.The colourimetric values (chromaticity co-ordinates and luminancefactor) expressed in terms of the trichromatic system for colourimetry,which constitute a permanent record of the standard colours obtainedfrom spectrophotometric measurements are also given in Table 1 forguidance. The Munsell system of colours is briefly explained inAnnex A.

A N N E X A( Foreword, Clauses 2.1 and 4.1 )

GLOSSARY OF COLOUR TERMS AND THE MUNSELL SYSTEM

A-1 DEFINITIONS

A-1.1 Achromatic Sensations Visual sensations devoid of theattribute of hue.A-1.2 Additive Mixture The mixture of light stimuli in such amanner that they enter the eye simultaneously or in rapid successionand arc incident on the same area of the retina, or enter in the form ofa mosaic which the eye cannot resolve.A-1.3 Black

A-1.3.1 A visual sensation arising from some portion of a luminousfield of extremely low luminosity.A-1.3.2 As defined in A-1.3.1, but applied to a secondary source whichis completely absorbing at all visible wavelengths.

NOTE The terms white and black are not always used in the strict sense definedabove. It is usual to apply them to greys and neutrals, the luminance factor of whichis nearly unity or nearly zero respectively.

A-1.4 Black Content The subjectively estimated amount ofblackness seen in the visual sensation arising from a surface colour.A-1.5 Brightness That colour quality, a decrease in which isassociated with the residual degradation which would result from theaddition of a small quantity of neutral grey to the colouring materialwhen the strength of the mixture has been readjusted to the originalstrength (comparison brighter).

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A-1.6 ColourA-1.6.1 That characteristic of visual sensation which enables theobserver to distinguish differences in the quality of the sensation of thekind which can be caused by differences in the spectral composition ofthe light.A-1.6.2 That characteristic of the light stimulus, light source or object,which gives rise to the visual sensation in a red light, a white light, ared face, etc.A-1.6.3 As defined in A-1.6.1 or A-1.6.2, but restricted to theappearance of redness, greenness, etc, as distinct from whiteness,greyness or blackness; that is, chromatic colour in contra-distinction toachromatic colour.A-1.7 Complementary ColoursA-1.7.1 Additive Any two colours which, by additive mixture, can bemade to match a specified achromatic colour.A-1.7.2 Subtractive Any two absorbing media which, by subtractivemixture, can be made to match specified achromatic colour.A-1.8 Colour Content The subjectively estimated amount ofcolourfulness seen in the visual sensation arising from a surfacecolour. Similar to chroma.A-1.9 Cleaner A difference apparently due to the presence of lessblack than in the original sample.A-1.10 Cool Colours Green or blue, or colours which exhibit apredominance of these.A-1.11 Chromatic Sensations Visual sensations possessing theattribute of hue.A-1.12 Dichroism A phenomenon in which a secondary sourceshows a marked change in hue with change in the observingconditions. Instances are : (a) change in colour temperature of theilluminant, (b) change in concentration of an absorbing material, (c)change in thickness of an absorbing layer, (d) change in direction ofillumination or viewing, and (e) change in condition of polarization.A-1.13 Dullness That colour quality, an increase in which isassociated with the residual degradation which would result from theaddition of a small quantity of neutral grey to the colouring materialwhen the strength of the mixture has been readjusted to the originalstrength (comparison duller).A-1.14 Deeper A difference apparently due to the presence of lesswhite than in the original sample.

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A-1.15 Dirtier/Duller A difference apparently due to the presenceof more black than in the original sample.A-1.16 Full Colour Surface colours which are produced with themaximum colourfulness obtainable.A-1.17 Grey

A-1.17.1 Any achromatic sensation of luminosity intermediatebetween black and white.A-1.17.2 As defined in A-1.17.1, but applied to a secondary sourcewhich is partially absorbing at some or all visible wavelengths butfrom which the reflected or transmitted light has the same colour asthat of the incident light.A-1.18 Hue Attribute of visual sensation which has given rise tocolour names, such as blue, green, yellow, red and purple.A-1.19 Light Radiant power (energy flux) capable of stimulatingthe eye to produce visual sensation.A-1.20 Minus Colours Colours in which only the spectralcomponents associated with the colour named are not present to anysubstantial extent, for example, minus red.A-1.21 Munsell Chroma The estimated pure chromatic colourcontent of a surface colour on a scale of equal sensation intervalsextending from grey (Chroma = 0), as specified objectively by thesample of the Munsell Atlas ( see Note ).

NOTE The Munsell System presents the closest attempt at representing thecolour solid of surface colours by samples, spaced at equal sensation intervals and,therefore, the closest correlation with the subjective variables, which are chroma.lightness (called value) and hue.

A-1.22 Munsell Value The estimated lightness of any surfacecolour on a scale of 10 equal sensation intervals extending from idealblack (value = 0) to ideal white (value = 10), as specified objectively forvalues from 1 to 9 in the Munsell Atlas ( see Note under A-1.21 ).A-1.23 Munsell Hue The hue of a surface colour on a scale of 100equal sensation intervals round a colour circle of constant chroma, aspecified objectively by the samples of the Munsell Atlas ( see Noteunder A-1.21 ).A-1.24 Masstone The colour by reflected light of a bulk ofundiluted pigment.A-1.25 Neutral Grey Applied to a secondary source which isequally absorbing at all visible wavelengths.

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A-1.26 Primary Light Source A body or object emitting light byvirtue of transformation of energy into radiant energy within itself.A-1.27 Shade A colour of the same hue and saturation but lowerluminosity.A-1.28 Shadow SeriesA-1.28.1 Subjective A series of colours of varying luminosity butconstant hue and saturation.A-1.28.2 Objective A series of colours of varying luminance butconstant chromaticity.A-1.29 Strength That colour quality, an increase in which isassociated with an increase in the concentration of the colouringmaterial present, all other conditions (viewing, etc) remaining thesame (comparisons stronger, weaker).A-1.30 Stronger A difference apparently due to the presence ofmore colour than in the original sample.A-1.31 Subtractive Mixture The mixture of absorbing media orthe superposition of filters so that the composition of the light stimuluspassing through the combination is determined by the simultaneous orsuccessive absorption of parts of the spectrum by each mediumpresent.A-1.32 Secondary Light Source A body or object transmitting orreflecting light falling on it from any other source, whether primary orsecondary.A-1.33 Tint The weak colour resulting from the addition to white ofa small amount of colouring matter.A-1.34 Tings A trace of added colour.A-1.35 Tone A slight variant of a colour.A-1.36 Undertone The colour of a pigment when it is used in verythin layers or greatly extended with white, the hue of which may oftendiffer from that of the masstone.A-1.37 Warm Colour Red, orange or yellow, or colours whichexhibit a predominance of these.A-1.38 Weaker A difference apparently due to the presence of lesscolour than in the original sample.A-1.39 WhiteA-1.39.1 An achromatic sensation of relatively high luminosity.A-1.39.2 As defined in A-1.39.1, but applied to a secondary sourcewhich is non-absorbing at all visible wavelengths.

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A-1.40 White Content The subjectively estimated amount ofwhiteness seen in the visual sensation arising from a surface colour.A-1.41 Whiter A difference apparently due to the presence of morewhite than in the original sample.

A-2 THE MUNSELL SYSTEM

A.2.1 In the Munsell system, the colours are specified in terms of hue,value and chroma.A-2.1.1 Hue It distinguishes red from blue, green from yellow, etc,and is denoted by letter (for example, R for red, BG for blue-green)with prefix numbers, namely, 2.5, 7.5, or 10. If, for example, the R (red)number is greater than 5, the colour inclines, to the yellow-red (YR),and if the R number is less than 5, the colour inclines to red purple(RP), and so on round the hue circle.A.2.1.2 Value It is related to lightness or darkness of a colour andis quoted as ranging from 0 to 10; the low figures represent the darkercolours and finally black (0), the high figures represent the lightcolours and finally white (10). A rough estimate of the reflectance as apercentage is given by the formula V ( V1 ), where V is the value.Thus, colours of similar values have similar reflectance.A-2.1.3 Chroma Attribute of a visual sensation which permits ajudgement to be made in the amount of pure chromatic colour present,irrespective of the amount of a chromatic colour.It is strength of colour and is based on a scale from neutral grey (/0)towards full strength at any given value level. Steps are denotednumerically at even intervals.A-2.1.4 Chromaticity Coordinates Ratio of each of the threetristimulus values to their sum. It indicates the colour quality of thesample and recommended symbols are x,y and z in the CIE 1931standard colourmetric system and x10, y10 and z10 in the CIE 1964supplementary colourmetric system.

x XX Y Z+ +-------------------------= x 10

X10X10 Y10 Z10+ +------------------------------------------=

y YX Y Z+ +-------------------------= y 10

Y10X10 Y10 Z10+ +------------------------------------------=

z ZX Y Z+ +-------------------------= z 10

Z10X10 Y10 Z10+ +------------------------------------------=

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X, Y and Z are the tristimulus values in the CIE 1931 StandardColourimetric System and X10, Y10 and Z10 in the CIE 1964Supplementary Colourimetric System.

x + y + z = 1 and x 10 + y 10 +z10 = 1

A-2.1.5 Tristimulus Value Amounts of the three reference ormatching stimuli required to give a match with the colour stimulusconsidered, in a given trichromatic system.The symbols recommended for the tristimulus values are X, Y and Z inthe CIE 1931 standard colourimetric system and X10, Y10 and Z10 inthe CIE 1964 standard colourimetric system.A-2.1.6 Luminance Value The emission by matter ofelectromagnetic radiation which for certain wavelengths or restrictedregions of the spectrum is in excess of that due to the thermal radiationfrom the material at the same temperature is defined as Luminance.The ratio of the luminance of a body while illuminated and observedunder certain conditions to that of perfect defuser under the sameconditions.A-2.1.7 Method of Determination of ChromaticityCoordinates The value of reflectance is measured for the sampleover a circular area of 20 mm in dia over a wavelength range of 400 to700 mm at 20 mm interval. The Macbeth Uptimatch colour matchingsystem is used for determining the reflectance values.A-2.2 A complete Munsell reference for a colour, for example, 7.5 R,9/2 means :

a) the hue of 7.5 R denoting a red inclined towards yellow-red,b) the value 9 denoting a very light colour, andc) the chroma 2 indicating that the strength of the colour is low.

A broad description of the colour would, therefore, be pale-pink.A-2.3 It should be noted, however, that neutral greys, having no hue orchroma, are denoted by the value figure prefixed by N, for example,N6 or N8.A-2.4 In the design of the colour range, Munsell references providethe means of defining the various categories of colour required.

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Table 1 Approximate Munsell References andColourimetric Values

( Foreword and Clause 4.1 )

Sl No.

Indian Stan- dard

Colour (ISC) No.

Name ofColourShade

Chromaticity Coordinates

Luminance Value

ApproximateMunsell Value

X Y Hue Value/Chroma

(1) (2) (3) (4) (5) (6) (7) (8)

1.2.3.4.5.

101102103104105

Sky BlueTurquoise BluePeacock BlueAzure BlueOxford Blue

0.29170.26050.24740.23080.2548

0.35120.33680.31050.25140.2641

34.4723.2312.479.366.18

2.5 BG7.5 BG5.0 B5.0 PB7.5 PB

6.5/3.04.5/10.03.5/5.02.75/8.02.0/5.0

6.7.8.9.10.

106108166169174

Navy BlueAircraft BlueFrench BlueTraffic BlueOriental Blue

0.29490.22420.21890.23650.2447

0.30680.23350.23710.28450.3243

5.058.5612.8811.7525.30

7.5 PB7.5 PB5.0 PB10.0 B2.5 B

1.00/4.02.50/7.03.00/12.03.50/8.05.50/7.0

11.12.13.14.15.

176177216217218

PhiroziSatin BlueEau-de-NilSea GreenGrass Green

0.19530.26660.34090.35180.3383

0.25150.30890.39610.42550.4338

20.9656.8743.0731.5317.83

10.0 B7.5 B7.5 GY7.5 GY7.5 GY

6.00/13.09.00/6.07.50/3.56.50/7.04.50/8.0

16.17.18.19.

219220221222

Sage GreenOlive GreenBrilliant GreenLight Bronze Green

0.35250.33600.3191

0.3651

0.40080.38480.4326

0.4059

17.999.1113.55

14.07

5.0 GY5.0 GY10.0 GY

2.5 GY

4.00/6.03.00/6.03.50/8.0

4.00/6.0

20. 223 Middle Bronze Green 0.3327 0.3706 8.57 2.5 GY 3.00/4.0

21. 224 Deep Bronze Green 0.3212 0.3553 7.06 2.5 GY 2.00/4.0

22. 225 Light Brunswick Green 0.3189 0.4149 11.25 10.0 GY 4.00/6.0

23. 226 Middle Brunwsick Green 0.2985 0.3723 8.14 5.0 G 2.50/4.0

24. 227 Deep Brunswick Green 0.2990 0.3558 6.87 10.0 GY 2.00/4.0

25.26.27.28.29.

267275276277278

Traffic GreenOpaline GreenLincoln GreenCypress GreenLight Olive Green

0.29610.31340.31450.32770.3537

0.38020.38750.38550.39890.4041

10.7636.628.8010.1723.24

2.5 G2.5 G2.5 G10.0 GY5.0 GY

3.00/5.06.50/5.03.00/5.03.00/4.05.50/4.0

30 279 Steel Furniture Green 0.3314 0.3510 7.88 10.0 Y 2.50/2.0

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Table 1 ( Continued )Sl No.

Indian Stan- dard

Colour (ISC) No.

Name ofColourShade

Chromaticity Coordinates

Luminance Value

ApproximateMunsell Value

X Y Hue Value/Chroma

(1) (2) (3) (4) (5) (6) (7) (8)

31.32.33.34.

280281282283

Verdigris GreenApple GreenForest GreenAircraft Grey Green

0.29080.32170.3083

0.3258

0.39280.39840.3820

0.3725

25.4330.4611.71

21.31

5.0 G10.0 GY10.0 GY

10.0 GY

5.50/6.05.75/6.02.50/4.0

5.00/3.0

35.36.37.38.39.40.

284294298299309352

India GreenScamicOlive DrabBus GreenCanary YellowPale Cream

0.29180.32790.33640.26260.45060.3865

0.39440.35550.36390.40170.46430.3964

11.649.728.4810.2262.4659.81

2.5 G2.5 GY10.0 Y10.0 Y5.0 Y5.0 Y

4.00/5.03.50/2.02.50/2.04.00/9.08.75/14.08.50/5.0

41.42.43.44.45.

353354355356358

Deep CreamPrimroseLemonGolden YellowLight Buff

0.41400.42650.47350.48550.4193

0.41330.42870.45440.43790.2994

63.5351.3351.0747.4645.36

2.5 Y5.0 Y2.5 Y10.0 YR10.0 YR

9.00/10.08.25/9.08.50/13.08.00/14.09.00/8.00

46.47.48.49.50.

359360361362363

Middle BuffDeep BuffLight StoneMiddle StoneDark Stone

0.43060.42530.38610.41920.4170

0.40620.39180.38270.39220.3886

35.3227.3938.5325.1621.08

10.0 YR7.5 YR10.0 YR10.0 YR10.0 YR

7.00/8.56.00/7.06.50/5.05.50/7.05.00/7.0

51.52.53.54.55.

364365368384385

Portland StoneVellumTraffic YellowLight StrawLight Biscuit

0.35960.34770.49910.36630.3825

0.37520.36650.40780.37880.3895

53.7660.4634.1254.9163.56

5.0 Y7.5 Y5.0 YR5.0 Y2.5 Y

8.50/3.08.75/3.06.50/12.08.50/5.08.75/5.0

56.57.58.59.60.

386387388397410

ChampagneSunshineBeigeJasmine YellowLight Brown

0.38280.37090.37190.41160.4263

0.38490.38070.37640.43070.3896

55.3249.3147.7464.1218.14

2.5 Y2.5 Y2.5 Y5.0 Y7.5 YR

8.25/4.57.50/3.07.50/6.09.50/10.04.50/6.0

61.62.63.64.65.

411412413414415

Middle BrownDark BrownNut BrownGolden BrownIndia Brown

0.39830.37120.33960.45050.3939

0.36930.34670.34040.38650.3578

11.177.866.9316.639.94

7.5 YR5.0 YR5.0 YR5.0 YR5.0 YR

3.00/4.02.00/4.02.50/2.05.00/7.02.50/6.0

66.67.

68.

439442

443

Orange BrownLight Salmon PinkSalmon Pink

0.4199

0.39020.3960

0.3563

0.37770.3596

11.38

57.7734.48

7.5 R

7.5 YR2.5 YR

3.00/8.0

9.00/5.06.50/7.0

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Table 1 ( Concluded )Sl No.

Indian Stan- dard

Colour (ISC) No.

Name ofColourShade

Chromaticity Coordinates

Luminance Value

ApproximateMunsell Value

X Y Hue Value/Chroma

(1) (2) (3) (4) (5) (6) (7) (8)

69.70

444445

Terra CottaVenetian Red

0.43600.4219

0.34570.3450

14.2410.77

7.5 R7.5 R

4.00/8.03.00/6.0

71.72.73.

446448449

Red OxideDeep Indian RedLight Purple Brown

0.40540.3786

0.3622

0.34150.3317

0.3292

9.747.61

6.88

7.5 R7.5 R

7.5 R

3.00/4.52.50/4.0

2.75/3.0

74.75.

451473

ChocolateGulf Red

0.33150.4020

0.33400.3352

6.138.21

5.0 R7.5 R

1.00/2.02.50/6.0

76.77.78.79.80.

489490499536537

Leaf BrownBeech BrownService BrownFire RedSignal Red

0.40890.37190.35200.35850.5252

0.36250.34830.35130.34640.3351

13.108.698.1017.6914.95

2.0 YR2.5 R10.0 YR7.5 R7.5 R

3.00/6.02.75/6.002.50/4.04.50/13.05.00/16.0

81.82.83.84.85.

538540541557570

Post Office RedCrimsonMaroonLight OrangeTraffic Red

0.49730.40670.34000.50960.4877

0.32690.32320.32420.38600.3531

10.887.325.8527.1915.13

5.0 R5.0 R7.5 R2.5 YR10.0 R

4.00/14.03.00/7.01.50/3.05.00/13.03.50/10.0

86.87.88.

89.90.

574591592

628629

Indian SaffronDeep OrangeInternational OrangeSilver GreyQuaker Grey

0.50290.5092

0.53080.33890.3429

0.35390.3640

0.35380.36640.3644

23.0121.72

19.6931.6026.51

7.5 R7.5 R

7.5 R2.5 GY10.0 Y

6.00/12.06.00/12.0

4.50/14.06.00/1.55.50/2.0

91.92.93.

94.95.

630631632

633634

French GreyLight GreyDark Admiralty GreyAF Blue-GreySlate

0.32630.3098

0.29940.29630.3252

0.35470.3413

0.32240.31910.3549

32.6931.28

15.758.0615.23

5.0 GY5.0 G

10.0 B10.0 B5.0 GY

6.50/1.55.50/1.5

4.00/1.52.50/2.54.00/1.5

96.97.98.99.100.

635671692693694

LeadMiddle GraphiteSmoke GreyAircraft GreyDove Grey

0.31040.30360.27560.30890.3128

0.34050.32460.30850.33430.3379

10.0010.0825.1423.9525.82

2.5 G10.0 B10.0 B10.0 BG5.0 BG

3.00/1.03.75/1.55.50/4.05.50/1.05.50/1.5

101.102.

103.104.

695697

698796

Dark Blue-GreyLight Admiralty GreySteel GreyDark Violet

0.3060

0.29870.30880.2981

0.3259

0.33770.32920.2579

6.17

47.957.679.90

10.0 B

10.0 BG10.0 BG7.5 P

2.50/1.5

7.00/3.02.50/1.53.00/7.0

PAINTS (OTHER THAN INDUSTRIAL PAINT) AND ALLIEDPRODUCTS SECTIONAL COMMITTEE, CHD 020

Chairman RepresentingSHRI T. K. S. MANI Addisons Paint & Chemicals Ltd, Madras

MembersSHRI S. N. AGARWAL

SHRI JASBIR SINGH ( Alternate )Directorate General of Technical

Development, New DelhiSHRI S. S. ANAKAIKAR

SHRI JAMEEL AHMAD ( Alternate )Goodlass Nerolac Paints Ltd, Bombay

SHRI S. K. ASTHANASHRI K. N. MEHROTRA ( Alternate )

Ministry of Defence (DGQA), New Delhi

SHRI V. M. BAVDEKARSHRI S. G. SHETYE ( Alternate )

Asian Paints (India) Ltd, Bombay

SHRI R. BEHL ICI India Ltd., CalcuttaDR P. G. CHAUDHARI

SHRI C. R. THUSE ( Alternate )Garware Paints Ltd, Bombay

Director (Chemicals)SHRI R. MUKHOPADHAYA ( Alternate )

Development Commissioner (SSI), GOI,New Delhi

SHRI M. M. GHOSH Shalimar Paints Ltd, CalcuttaDR S GHOSH

SHRI K. NIRMAL KUMAR ( Alternate )Berger Paints India Ltd, Calcutta

Joint Director (CM)SR (CMT) ( Alternate )

Railway Board, New Delhi

SHRI JUNG BAHADURSHRI A. MAZUNDAR ( Alternate )

Tata Engg. & Locomotive Co, Pune

SHRI ALOK MATHURSHRI M. M. GHOSH ( Alternate )

Indian Paints Association, Calcutta

SHRI ALOK MUKHERJEESHRI S. P. GOEL ( Alternate )

The U. K. Paint Industries, New Delhi

SHRI D. P. MUKHERJEESHRI A. P. SINHA ( Alternate )

Heavy Machine Building Plant (HEC), Ranchi

SHRI ANIL A. PAREKHSHRI G. K. LOYALKA ( Alternate )

Indian Small Scale Paint Assc., Bombay

SHRI RAMESH CHAND Central Public Works Deptt., New DelhiDR GAUTAM RAY

SHRI R. N. BANERJEE ( Alternate )Jenson & Nicholson (India) Ltd, Calcutta

SHRI R. L. TIWARISHRI B. S. NARULA ( Alternate )

Ministry of Defence (R & D), New Delhi

REPRESENTATIVE Ministry of Environment & Forests, New DelhiSHRI S. K. SAHA

SHRI A. CHAKRAWARTY ( Alternate )National Test House, Calcutta

DR G. SAHA Engineers India Ltd, New DelhiDR M. S. SAXENA

DR M. M. SHIRSALKAR ( Alternate )Oil Technologists Association of India, Kanpur

SHRI G. N. TEWARISHRI P. K. KHANNA ( Alternate )

The Punjab Paint Colour & Varnish WorksLtd, Kanpur

SHRI M. B. UNNIISHRI N. D. GUPTA ( Alternate )SHRI A. K. BASU( Alternate )

Bharat Heavy Electricals Ltd, New Delhi

SHRI V. K. VERMASHRI A. K. AGARWAL ( Alternate )

Shriram Institute for Industrial Research,New Delhi

DR M. YASEENDR B. G. K. MURTHY ( Alternate )

Indian Institute of Chemical Technology,Hyderabad

DR R. K. Singh, Director (Chemicals) Director General, BIS ( Ex-officio Member )

Member SecretarySHRI R. NARULA

Joint Director (Chem), BIS

Bureau of Indian StandardsBIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promoteharmonious development of the activities of standardization, marking and quality certification ofgoods and attending to connected matters in the country.

CopyrightBIS has the copyright of all its publications. No part of these publications may be reproduced in anyform without the prior permission in writing of BIS. This does not preclude the free use, in the courseof implementing the standard, of necessary details, such as symbols and sizes, type or gradedesignations. Enquiries relating to copyright be addressed to the Director (Publications), BIS.

Review of Indian StandardsAmendments are issued to standards as the need arises on the basis of comments. Standards are alsoreviewed periodically; a standard along with amendments is reaffirmed when such review indicatesthat no changes are needed; if the review indicates that changes are needed, it is taken up forrevision. Users of Indian Standards should ascertain that they are in possession of the latestamendments or edition by referring to the latest issue of BIS Catalogue and Standards : MonthlyAdditions.This Indian Standard has been developed by Technical Committee : CHD 20

Amendments Issued Since PublicationAmend No. Date of IssueAmd. No. 1 September 1995

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Title PageForeword1. Scope2. Terminology3. Numbering System4. `Munsell' References and Colourimetric ValuesAnnex ATable 1