In bug 1201331, we are adding yet another "firefox blue" button with white text. While reviewing the patch, Gijs remarked (bug 1201331 comment 49): > Note: this only passes WCAG AA contrast checks for large text, which would be > >=14pt + bold or >=18pt (and normal font-weight), which the text isn't. > It would be good if UX picked a darker shade for the background to alleviate > this problem. Something like #016ea1 would work but I don't know if that looks > ugly and/or UX wants to pick something else. See http://webaim.org/resources/contrastchecker/ > for an easy-to-use tool to check this. Note that the same color is also used in a number places (eg, pocket, hello)