- From: James Nurthen <james.nurthen@oracle.com>
- Date: Wed, 14 Mar 2012 15:34:45 -0700
- To: "Tab Atkins Jr." <jackalmage@gmail.com>
- CC: Michael Cooper <cooper@w3.org>, CSS WG <www-style@w3.org>, WAI PFWG <w3c-wai-pf@w3.org>, WAI XTech <wai-xtech@w3.org>, WAI Liaison <wai-liaison@w3.org>
On 3/14/2012 2:31 PM, Tab Atkins Jr. wrote: >> 4. Gradients >> >> It should probably be stated that gradients can cause subtle issues with >> maintaining a sufficient luminosity contrast ratio between the text and its >> background. (an informative note about making sure to meet WCAG2 1.4.3 is >> probably good) > How is this any different from the generic situation with background > colors/images and contrast? I haven't added anything about this. The biggest difference between generic colors and the other scenarios (images / gradients / rgba colors) is the difficulty in measuring the ratio to determine if you have sufficient contrast. With rgb colors it is trivial to determine if you have sufficient contrast. With the others there is no automated way to measure the ratio. regards, James
Received on Wednesday, 14 March 2012 22:37:24 UTC