id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
23513	Twenty Thirteen: color contrast should aim for WCAG2 level AA compliance	jorbin		"With a more complex color palette than the previous black (or gray) on white default themes, we will have to check contrast ratios more carefully, with a goal of 4.5:1 for body text, and 3:1 for large text, as recommended by WCAG 2.0 accessibility guidelines. For example:

The contrast between the beige and orange is a bit low.  The ratio is currently 3.2:1 with f94a0a being the orange,  If we switch to CA3C08, then we can bump the ratio to 4.6:1.  

Even against white (#fff), the ratio is only 3.5:1.  

Why is this important:

[http://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html]  explains why 4.5:1 is a minimum that we should aim for.  Essentially it greatly will increase the readabilty for people with low visual acuity (roughly people with 20/40 vision).

http://leaverou.github.com/contrast-ratio/ was used to check the ratios. 

Since we're likely to have multiple contrast fixes, let's collect them all in this ticket. "	defect (bug)	closed	normal	3.6	Bundled Theme		normal	fixed	has-patch close	dromsey@…