WebAIM - Web Accessibility In Mind

E-mail List Archives

Re: Color Contrast Testing Visual Question


From: Patrick H. Lauke
Date: Aug 23, 2019 9:41AM

On 23/08/2019 16:18, Jim Homme wrote:
> Hi,
> This is a question for my understanding as a totally blind person. A tester reports that content passes or fails contrast testing depending on monitor settings. We are using Colour Contrast Analyzer. If this is the case, how can we depend on accurate results, because we would not know the kind of monitor an audience has?

The tester may be referring to this bug in current Colour Contrast
Analyser, which is unfortunately not likely to get solved any time soon
(or, I fear, at all, due to the limitations of using Electron for the app)


Testers should refer back to the actual values defined in the CSS /
using developer tools to find the actual computed foreground/background
values, and stick those into the text fields of CCA to find the correct

Because yes, to pass the SC, you don't take the user's
calibration/settings into account, as that would be impossible for
authors to account for.

Patrick H. Lauke

www.splintered.co.uk | https://github.com/patrickhlauke
http://flickr.com/photos/redux/ | http://redux.deviantart.com
twitter: @patrick_h_lauke | skype: patrick_h_lauke