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Re: Color Contrast List?


From: Bryan Garaventa
Date: Apr 26, 2013 2:26PM

I see what you mean, but I'm having trouble locating which elements have
color contrast issues on wave

For example, I went to the above url, entered 'http://cnn.com', and see
seventy+ color contrast violations. However I can't locate them. How do I
get a list of exactly which elements are in violation, the
foreground/background color values detected, and what the color contrast
ratios are for each?

----- Original Message -----
From: "Jared Smith" < <EMAIL REMOVED> >
To: "WebAIM Discussion List" < <EMAIL REMOVED> >
Sent: Friday, April 26, 2013 1:01 PM
Subject: Re: [WebAIM] Color Contrast List?

> On Fri, Apr 26, 2013 at 1:37 PM, Bryan Garaventa wrote:
>> I searched around, and found an awesome resource at
>> http://www.checkmycolours.com/
> A word of caution about this and similar tools...
> These tools generally check all possible foreground and background
> combinations for all elements. They do not, however, check to ensure
> that a particular color combination is actually in use on the page. So
> just because it flags a lot of failures does not mean there are
> actually contrast issues present on the site. Yes, this information
> can still be very valuable, but it can also result in a lot of
> confusion or misapplied angst or effort in trying to address issues
> that don't exist in reality.
> We've put in significant effort to address these issues in the newly
> released WAVE tool. It only flags color combinations that are actually
> present in the page (meaning there is text present that is also
> presented on a particular background color and that exact combination
> fails the contrast requirements). This turns out to be quite complex
> when you consider CSS inheritance, transparency, etc., and we still
> have a few kinks to work out.
> The Checkmycolors tool, for example, flags 15 failures on the
> WebAIM.org site when there is actually only one instance of text on a
> background color that fails WCAG. This particular failure is the only
> one that WAVE identifies, thus focusing effort on the actual failure
> instead of many potential, but nonexistent, failures.
> Jared
> > >