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Subject: Re: Does colour in multiple threads disadvantage colour blind members?

Author: David Blackman

Date: 03:03:58 12/08/00

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On December 07, 2000 at 20:16:46, Alastair Allan wrote:

>I am red/green colour blind and can barely make out what is presented in light
>green (if that is what it is) which to me does not contrast well with the
>background. I would guess that 5% or so of the membership will be similarly
>troubled.

Any light colour on white is a bad choice. If we are going to have colours on a
white background, could they all be dark colours please?

There are several kinds of red/green colour blindness. I think one or two of
them make light green on white even harder to read. (Dichromat with blue and
green, and anomolous trichromat with blue and two kinds of green). But light
green on white is bad for almost anyone.

BTW a factor that could be even worse that colour blindness, is the way your web
browser handles colour. If you have a low gamma factor (Macintosh?) , or you
only have 256 or less colours, you might be getting a lighter shade of green
than the people designing the colour scheme think you are.



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