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Re: Proposed amendment to 1.4.11 for WCAG 2.2

From: Alastair Campbell <acampbell@nomensa.com>
Date: Thu, 17 Oct 2019 16:13:03 +0000
To: John Foliot <john.foliot@deque.com>
CC: WCAG <w3c-wai-gl@w3.org>
Message-ID: <1BC7ABB4-4358-4BB5-9C43-B1369DD1168C@nomensa.com>
John wrote:
> FWIW, I have never agreed with Alastair's interpretation there, because focus indication (and contrast) is (should be?) primarily between the control and the background, and not between the control itself in various states (although that too can be a consideration).

Unfortunately the normative text doesn’t cover focus states as effectively as we wanted, however you read it.

Focus indicators have far more variety than can be covered with a simple test of adjacent colors as the focus indicator might be:

  *   Inside the component (so background outside the component is irrelevant)
  *   Adjacent to the component (where both component and background are relevant)
  *   Outside of the component.
  *   A bit of everything!

See these examples:

If you have a look through the proposed text for focus-vis-enh:

That accounts for both the change of contrast (the most important perceptual factor), and the adjacent colours (secondary but important in some cases). I think that is a more robust solution all around.

Regarding the proposed update to 1.4.11, I think it makes sense but we need to think through how the versions work together. Is it better as an errata to 2.1 (which would be simpler for understanding/technique docs), or for 2.2 onwards?


Received on Thursday, 17 October 2019 16:13:09 UTC

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