Quote - I've always considered colour perception to be fairly relative...

As I understand it, biologically males and females perceive colours differently.. for starters.

Hmmm... citation needed there... googles aha, here you go...

http://scienceblogs.com/cognitivedaily/2007/07/14/do-women-perceive-color-differ-3/

Well... reading that, there seems to be some evidence of biological variations in colour perception?

My concern about color classification is not about relative color perception, or even about differences amongst various humans, although I recognize these as factors.

I'm thinking more about simple classification systems, as an aid to finding the color you want.

For example, I have attempted, via math, to classify my colors into the following broad color categories:

A) Achromatic

B) Blue

C) Cyan

G) Green

M) Magenta

O) Orange (and browns)

R) Red

Y) Yellow

I based the classification on the traditional "hue" angle, as used in an HSV color picker.

Imagine my surprise, then, when I found olive green classified as yellow. To me it's not even close to yellow - it's absolutely green. But in terms of hue measurement, it's solidly in the yellow band. (My solution was to nudge the color a bit out of the yellow band, so that the classifier would agree with me, rather than update the classifier and risk moving other colors around. It's a big job to re-build the thumbnails.)

This led me to investigate color perception. I found this interesting researching that confirmed my personal observation. As a color gets darker, whatever green is in it becomes more emphasized.

http://www.uv.es/psicologica/articulos1.04/2-LILLO.pdf

I want to emphasize that I'm not picking these colors on the basis of some abstract desire for even use of the color wheel. I've made no such attempt. I selected colors I like and find useful and avoided a good chunk of colors (pinks) that I just don't think are that commonly needed.

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