Thread Subject: Re: Color
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From: Andrew Kirkpatrick
Date: Sun, Aug 19 2007 12:45 PM
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I'd be happy with:
Color must not be used as the only visual means of conveying information.
I think that this covers the list, is shorter than wcag, and doesn't have the heavy "simultaneously visually
evident" phrase that is unnecessarily complex.
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From: Gregg Vanderheiden [mailto: = EMAIL ADDRESS REMOVED = ]
Sent: Sunday, August 19, 2007 06:30 AM Pacific Standard Time
To: 'TEITAC Web/Software Subcommittee'
Subject: [teitac-websoftware] Color
Was looking to harmonize WCAG with TEITAC but I think new WCAG proposal
might be better
Any information <http://www.w3.org/WAI/GL/WCAG20/#informationbycolordef>
that is conveyed by difference in color is also simultaneously visually
evident without the color difference.
Color must not be used as the only visual means of conveying information,
indicating an action, prompting a response, or distinguishing a visual
Disadvantages of TEITAC
2) uses list of things (which is always dangerous in provision --
though useful in a note)
3) If I use blue text to convey information - it should not trigger
this (if the blue has no meaning). However this language in past WCAGs has
caused people to believe that they could not convey information in color
(rather than by color).
Gregg C Vanderheiden Ph.D.
Professor - Depts of Ind. Engr. & BioMed Engr.
Director - Trace R & D Center
University of Wisconsin-Madison
< <http://trace.wisc.edu/> http://trace.wisc.edu/> FAX 608/262-8848
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