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RE: Colors and the WCAG

From: Charles McCathieNevile <charles@w3.org>
Date: Sun, 20 Oct 2002 10:57:02 -0400 (EDT)
To: John Foliot - bytown internet <foliot@bytowninternet.com>
cc: Joe Clark <joeclark@joeclark.org>, WAI-IG <w3c-wai-ig@w3.org>, <c.bottelier@iradis.org>
Message-ID: <Pine.LNX.4.30.0210201055120.21572-100000@tux.w3.org>

No, the validator should be smarter and work out whether this is a problem or
not. But that is a non-trivial piece of work involving parsing both the style
sheet and the document. For testing HTML it's easier than it is for SVG...



On Sat, 19 Oct 2002, John Foliot - bytown internet wrote:

>> If you set foreground colours but not background colours you haven't
>> specified any contrast, and have therefore failed the checkpoint, in my
>> opinion. But Joe is right that you don't need to do this for
>> every element -
>> you can use the inheritance of properties if you have set a background
>> globally and foregrounds locally or vice versa.
>Actually, if you set a color to an element in your style sheet but not a
>background color it will return as a warning from the W3C CSS validator
>(http://jigsaw.w3.org/css-validator/).  While not *wrong* you should be
>setting both attributes to an element.

Charles McCathieNevile  http://www.w3.org/People/Charles  tel: +61 409 134 136
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Received on Sunday, 20 October 2002 10:57:08 UTC

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