Path: utzoo!mnetor!uunet!husc6!cmcl2!brl-adm!umd5!uvaarpa!mcnc!rti!bdrc!jcl
From: jcl@bdrc.COM (John C. Lusth)
Newsgroups: comp.graphics
Subject: Re: Naive Question About Primary Colors
Message-ID: <310@bdrc.UUCP>
Date: 28 Mar 88 14:08:25 GMT
References: <7871@oberon.USC.EDU> <7779@apple.Apple.Com>
Reply-To: jcl@bdrc.UUCP (John C. Lusth)
Distribution: na
Organization: Becton Dickinson Research Cntr., Research Tri. Park, NC
Lines: 23
Keywords: primary colors
Summary: What "primary" means

In article <7779@apple.Apple.Com> grady@apple.UUCP (Grady Ward) writes:
>
>  The colors red, blue, green are only one example of primaries (ones which
>  require the least addition of white to make all the rest of the colors).

A small point.  Given primary colors A, B, and C, and target color X,
it is not necessarily true that some combination of the primaries will
match color X.

       A + B + C matches X                  *** not necessarily true ***
       
However, it is true that for any X that some combination of X and one
of the primaries can be matched be some combination of the other
two primaries.

       A + B matches X + C                   *** always true ***


John C. Lusth
Becton Dickinson Research Center
Research Triangle Park, NC 27709

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