Colour Illusions

Simultaneous colour contrast

Animated versions...

Neon Colour Spreading

Colour Assimilation

Benham's Top

Chromatic NegativeAfterimageFixate on either of the twocrosses; now fixate on the othercross.

http://www.grand-illusions.com/opticalillusions/colour_illusion/

The McCullough Effect.

After alternately viewing a vertical stripe ofblack and magenta and a horizontal one ofblack and green, observers see illusorygreen in a vertical stripe of black and whiteand illusory magenta in a horizontal one ofblack and white.

The Watercolor Illusion

The Wave-Line Illusion

The Troxler Effect(Peripheral Fading)

http://www.michaelbach.de/ot/col_lilacChaser/index.html