Ian and Eli (et al), Dojo has a page, written by Becky Gibson, describing a11y design requirements for their designers and developers. Its purpose is to provide tips for people who have little a11y knowledge, and to assure them that a11y issues are not overly difficult (although there is still work to be done).
The advice applies to the current discussion. Specifically, there are tips regarding colour usage in the cases of colour blindness and high contrast mode. A relevant quote: > It tries to address color blindness issues where a person may not be > able to perceive certain colors. It does *not* mean you can not use > color! However, ... there must be enough contrast between the colors > used for the difference to be apparent if the color itself can not be > seen. It goes on to suggest how one can test quickly if one's colour scheme is lacking. For the complete story, see: http://www.dojotoolkit.org/developer/A11yReq Also, the page references Gez Lemon's site on colour contrast that includes a table of example luminosity contrast ratios, where one can quickly see whether the contrast is sufficient, and a luminosity contrast ratio calculator, where you can enter a pair of colours and it will advise if the contrast is good or bad. Gez Lemon's site: http://juicystudio.com/services/coloursaferatio.php Contrast ratio calculator: http://juicystudio.com/services/luminositycontrastratio.php <http://juicystudio.com/services/coloursaferatio.php> Hope that helps. -- ;;;;joseph 'This is not war -- this is pest control!' - "Doomsday", Dalek Leader - _______________________________________________ fluid-work mailing list [email protected] http://fluidproject.org/mailman/listinfo/fluid-work
