- From: Gregg Vanderheiden <gv@trace.wisc.edu>
- Date: Mon, 9 Jan 2006 20:18:38 -0600
- To: "'Becky Gibson'" <Becky_Gibson@notesdev.ibm.com>, <public-wcag-teamb@w3.org>
If the cross hatch meets the contrast guideline - it would not need to be black. Suggest you use the contrast guideline and allow any colors as long as there is sufficient luminosity contrast. More freedom for authors but still accessible to those with color deficiency. Gregg -- ------------------------------ Gregg C Vanderheiden Ph.D. Professor - Ind. Engr. & BioMed Engr. Director - Trace R & D Center University of Wisconsin-Madison -----Original Message----- From: public-wcag-teamb-request@w3.org [mailto:public-wcag-teamb-request@w3.org] On Behalf Of Becky Gibson Sent: Monday, January 09, 2006 5:04 PM To: public-wcag-teamb@w3.org Subject: New draft technique for Situation B in 1.3.2 and 1.3.4 I created a draft technique, Using Color and Pattern [1], for situation B in success criteria 1.3.2 and 1.3.4. Situation B is, "Color is being used within an image to convey information." I tried to use the ideas that Lisa sent to the list, although this general technique is fairly simple. In the example I specified that black should be used for the pattern. I assume that the use of black is considered available in a non-color dependent manner? If I didn't specify black I was afraid that the technique could be met by creating the cross hatching in a bar chart using a color and thus would still not be accessible to some. Please review. Thanks. [1] http://trace.wisc.edu/wcag_wiki/index.php?title=Using_color_and_pattern Becky Gibson Web Accessibility Architect IBM Emerging Internet Technologies 5 Technology Park Drive Westford, MA 01886 Voice: 978 399-6101; t/l 333-6101 Email: gibsonb@us.ibm.com
Received on Tuesday, 10 January 2006 02:18:55 UTC