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Re: Issue 9: Informational Graphic Contrast (Minimum)

From: Andrew Kirkpatrick <akirkpat@adobe.com>
Date: Mon, 21 Nov 2016 14:33:39 +0000
To: Alastair Campbell <acampbell@nomensa.com>, WCAG <w3c-wai-gl@w3.org>
Message-ID: <8F7A0EE4-8DBA-437E-91FD-854D01291BF8@adobe.com>
The formatting on GitHub is fixed so please keep looking there…

Thanks,
AWK

Andrew Kirkpatrick
Group Product Manager, Standards and Accessibility
Adobe

akirkpat@adobe.com
http://twitter.com/awkawk


From: Alastair Campbell <acampbell@nomensa.com<mailto:acampbell@nomensa.com>>
Date: Monday, November 21, 2016 at 09:16
To: WCAG <w3c-wai-gl@w3.org<mailto:w3c-wai-gl@w3.org>>
Subject: Re: Issue 9: Informational Graphic Contrast (Minimum)
Resent-From: WCAG <w3c-wai-gl@w3.org<mailto:w3c-wai-gl@w3.org>>
Resent-Date: Monday, November 21, 2016 at 09:17


Hi,



For anyone looking at the last agenda item (new SC survey), the second item (Issue 9) isn’t well formatted on github (yet).



There was a comment already about how to test multi-colored graphics, which I think is answered, but is easily missed on the current github description.



A better formatted version is here in the meantime:

https://www.w3.org/WAI/GL/low-vision-a11y-tf/wiki/Informational_Graphic_Contrast_(Minimum)



The short answer is that: Any ‘graphical element’ needed for understanding has to be discernible from its surroundings, whether that is background or adjacent elements. There are many ways of doing that, whether it is removing the need for it to be understood (e.g. adding a label), or borders, or patterns.



There is a set of examples with workings here:

https://alastairc.ac/tests/graphic-contrast-test.html




Kind regards,



-Alastair
Received on Monday, 21 November 2016 14:34:14 UTC

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