WebAIM - Web Accessibility In Mind

E-mail List Archives

Re: [External Sender] Color Contrast Testing Visual Question


From: Brian Lovely
Date: Aug 23, 2019 9:29AM

Hey Jim,

I am not familiar with this kind of finding, but I will say a few things
about this. To the best of my knowledge, the Colour Contrast Analyzer is
monitor-settings agnostic. It just takes two colors and performs some math
on them.The colors should come from the CSS, not from user monitor settings.

In my opinion, monitor variation and settings are the user's
responsibility. The web team cannot possibly account for this. I also would
avoid settling for the bare minimum. Just because 4.5 to 1 (for instance)
passes doesn't mean you shouldn't try for better. For one thing, 4.5 to 1
may be so close to the line that factors like the user's monitor can affect

I humbly propose that your sighted tester is barking up the wrong tree. If
there is more information that can explain this to me, I would be willing
to revisit my opinion.

On Fri, Aug 23, 2019 at 11:18 AM Jim Homme < <EMAIL REMOVED> > 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?
> Thanks.
> Jim
> ==========
> Jim Homme
> Digital Accessibility
> Bender Consulting Services
> 412-787-8567
> https://urldefense.proofpoint.com/v2/url?u=https-3A__www.benderconsult.com_our-2520services_hightest-2Daccessible-2Dtechnology-2Dsolutions&d=DwICAg&c=pLULRYW__RtkwsQUPxJVDGboCTdgji3AcHNJU0BpTJE&r=MMimM36KI-FWX0bnlG1RIV6Bl3MtdwmuKJCwL2Q3WrQ&m=syD9GMBOMYHGCO0LJu0Ln-aPpo14qnwLHgTz3KE_Qqo&s=DuWh5Mj4nBq5OBXbPPsgvBtLnD7Fav_CpT1j6DJnfL4&e=
> > > https://urldefense.proofpoint.com/v2/url?u=http-3A__list.webaim.org_&d=DwICAg&c=pLULRYW__RtkwsQUPxJVDGboCTdgji3AcHNJU0BpTJE&r=MMimM36KI-FWX0bnlG1RIV6Bl3MtdwmuKJCwL2Q3WrQ&m=syD9GMBOMYHGCO0LJu0Ln-aPpo14qnwLHgTz3KE_Qqo&s=MJePa1EiXwM9gcqbyf4TEVEj6AlmEAtkZrpa21zQCN8&e=
> List archives at
> https://urldefense.proofpoint.com/v2/url?u=http-3A__webaim.org_discussion_archives&d=DwICAg&c=pLULRYW__RtkwsQUPxJVDGboCTdgji3AcHNJU0BpTJE&r=MMimM36KI-FWX0bnlG1RIV6Bl3MtdwmuKJCwL2Q3WrQ&m=syD9GMBOMYHGCO0LJu0Ln-aPpo14qnwLHgTz3KE_Qqo&s=MPtILVk7tR4xFANdSiRP-KFKMn0k4VPQupD2Akc55OA&e=
> >

*Brian Lovely*
Capital One Digital Accessibility

The information contained in this e-mail is confidential and/or proprietary to Capital One and/or its affiliates and may only be used solely in performance of work or services for Capital One. The information transmitted herewith is intended only for use by the individual or entity to which it is addressed. If the reader of this message is not the intended recipient, you are hereby notified that any review, retransmission, dissemination, distribution, copying or other use of, or taking of any action in reliance upon this information is strictly prohibited. If you have received this communication in error, please contact the sender and delete the material from your computer.