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From: shirriff@sprite.berkeley.edu (Ken Shirriff)
Newsgroups: comp.graphics
Subject: New color space
Message-ID: <1991Jun8.002320.21449@agate.berkeley.edu>
Date: 8 Jun 91 00:23:20 GMT
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I've come up with an idea for defining a color space, based on the 3 axes:
red-neutral-green,
blue-neutral-yellow, and
white-neutral-black.

These axes have the advantage that all 11 basic colors (red, orange, yellow,
green, blue, purple, brown, pink, black, white, gray) are grid points on
these axes.
(For instance, orange = (red,yellow,neutral), brown = (red,neutral,black),
pink = (red,neutral,white), gray = (neutral,neutral,neutral))

Has anyone defined a color space based on these axes before or have
I reinvented the wheel?  (I checked Foley & Van Dam, but it only described
RGB, YIQ, HSV, HLS.)

I've worked out a 1-1 mapping between RGB space and the new space. 
I have a X11 demo program available by anonymous FTP from
sprite.Berkeley.EDU in pub/rbwdemo.Z if anyone wants to try this new color
space.

I hope this color space might be more intuitive than others, since it
is loosely based on basic perceptual colors.  Anyways, send me your
comments if it seems interesting.

Ken Shirriff				shirriff@sprite.Berkeley.EDU