Light colours versus dark colours

[briarrose]

Does light colour dilute quicker than dark colours

[NetSquirrel]

Could you explain what you mean by dilute?

[briarrose]

If adding water to two colours would the colouring in the light colour (say yellow) disappear before the colouring in the dark (say black) or would they both dilute/disappear at the same rate?

[5029]

how do you add water to a colour???

 

do you mean coloured paint?

[Tim Baxter]

A light colour contains less pigmentation (or more white) which transmits/reflects more light than a dark pigment.  As the lighter colour already transmits/reflects more light then a dark pigment then any equal reduction in each (by dilution) would see it get paler (whiter) quicker than the dark.  If you see what I mean.......

[Hamish]

Sorry to disagree tim but the change of light absorbtion of a material is liniar with respect to dilution. ie diluting two colours by 50% will result in a 50% decreae in the intencity of both. However, the eye is more sensative to some colours (esp in the green region)  and therefore it can appear that a yellow pigment gets lighter at a different rate to a red.

[Tim Baxter]

I was referring to a lighter and darker shade of the same colour.  At an exteme does diluted white = diluted black if both are diluted by 50%?  Is pink a diluted red, is lemon a diluted yellow, is skyblue a diluted blue?  Is lime a diluted green?