Subject: Re: The NetBSD Homepage
To: Stefan Schumacher <firstname.lastname@example.org>
From: Greg Troxel <email@example.com>
Date: 06/23/2005 10:11:59
Same here on my office TFT. I manage several websites here at my
university and playing with colors, esp. backgroundcolors, has always
been a pain. Usually a CRT is brighter than a TFT and offers more
contrast, so the site looks different on any Monitor/Browser/OS.
In theory, colors on the web are in the sRGB colorspace, which has a
gamma of 2.2. 2.2 corresponds to a typical CRT (when adjusted
correctly, which is not hard but fairly rare), and results in
relatively even ratios of luminosity as one steps from 0-255.
My notebook TFT (Thinkpad T30 1400x1050) has a different gamma, and I
haven't managed to calibrate it yet. This web page is helpful for
understanding gamma and calibration, and has a helpful chart:
In practice, color calibration is messy, but the right thing for a
site to do is publish in sRGB, and probably avoid requiring
distinguishing of close colors (an accessibility issue anyway).
Greg Troxel <firstname.lastname@example.org>