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Re: Help with measuring colour contrast on video


From: Murphy, Sean
Date: Jan 21, 2020 5:26PM

I thought video was exempted from 1.4.3 and 1.4.10 (High Contrast Non-text). Is this correct?


-----Original Message-----
From: WebAIM-Forum < <EMAIL REMOVED> > On Behalf Of Robert Hardy
Sent: Wednesday, 22 January 2020 5:24 AM
To: WebAIM Discussion List < <EMAIL REMOVED> >
Subject: Re: [WebAIM] Help with measuring colour contrast on video

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I don't have any immediate recommendations for testing tools, but would recommend using an outline around the text. A stroke that contrasts sufficiently with the text itself should enhance contrast on a variety of backgrounds. Alternatively, you could have a background behind the text, as YouTube does.


On Tue, Jan 21, 2020 at 8:41 AM Claire Brotherton < <EMAIL REMOVED> > wrote:

> Has anyone got advice or experience of measuring the contrast between
> text superimposed a video background?
> I would imagine that you have to take stills of the video, sample
> pixels of the text and background, and test the colour values. But
> there could be thousands of frames in, say, a 1 minute video.
> Has anyone got practical tips?
> Kind regards
> Claire
> --
> Claire Brotherton
> A Bright Clear Web <https://www.abrightclearweb.com>
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> >

*Robert Hardy*
*Website Accessibility Specialist*
*Olympia School District*
*(360) 596-6105*