Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!hplabs!hpfcdc!hpfcdq!jlg
From: jlg@hpfcdq.HP.COM (Jeff Gerckens)
Newsgroups: comp.graphics
Subject: Re: Looking for RGB values
Message-ID: <390032@hpfcdq.HP.COM>
Date: 25 May 89 22:23:48 GMT
References: <6477@sdcsvax.UCSD.Edu>
Organization: Hewlett-Packard - Fort Collins, CO
Lines: 24

The rgb values will be different for almost every monitor 
that you may care to look at and different again if you have
the option of gamma correction in your hardware.

The most correct solution is to use a colorimeter to determine
the color of your phosphors, the ambient light, and a sample
of the metal in question and apply colorimetric priciples to 
determine the correct rgb values for your viewing situation.

The most practicable solution is to write a small program that
lets you adjust rgb values while watching the colors change on
the screen so you can choose the color that looks best to you.

There was an article last year in TOG concerning which color
spaces to use as control for the second option.  Some allow
for quick convwrgence to something close to hat you want, while
others allow for more accuracy once you get near the desired 
color.

Color is word that is bandied about by most CS folk with little
knowledge of what is really involved.

- Jeff Gerckens Hewlett-Packard Graphics Technology Division
  (jlg%hpfcrg@hplabs.hp.com)