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Re: Test suite submissions

From: Chris Lilley <chris@w3.org>
Date: Thu, 13 Mar 2003 01:31:48 +0100
Message-ID: <6131674390.20030313013148@w3.org>
To: www-style@w3.org, John Lewis <lewi0371@mrs.umn.edu>

On Wednesday, March 12, 2003, 10:36:50 PM, John wrote:

JL> Rijk wrote on Wednesday, March 12, 2003 at 3:26:59 PM:

>> Ian wrote:

>>> In practice, in my six years of writing CSS tests, I cannot recall
>>> receiving a single complaint from anyone who was blocked from using
>>> CSS tests because of red/green colour blindness.

>> I do have problems with 'maroon', which is used in some tests. I can
>> hardly distinguish between maroon and black text color on a white
>> background. Red text on a white background is better, but still not
>> very easy. Distinguishing background colors, however, is no problem
>> for me. And if a test says 'this text should be green text', I can
>> see easily enough whether it is green or 'some other color, most
>> likely black'.

JL> I suspect the definitions of red and green were chosen carefully; red
JL> is #ff0000 and green is #008000. There is a significant difference
JL> between the two even if the colors appear identical (the difference
JL> between #808080 and #404040 or something like that).

That depends on which sort of red-green color blindness you have.

JL>  This distinction
JL> is much easier to make with a background color than with a text or
JL> thin border color--maybe the test writers should be encouraged to use
JL> background colors wherever possible.

I agree that large areas of color are easier to distinguish.

 Chris                            mailto:chris@w3.org
Received on Wednesday, 12 March 2003 19:32:06 UTC

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