- From: Phill Jenkins <pjenkins@us.ibm.com>
- Date: Tue, 26 May 2015 14:30:45 -0500
- To: Sailesh Panchang <sailesh.panchang@deque.com>
- Cc: WAI Interest Group List list <w3c-wai-ig@w3.org>
- Message-ID: <OFE7AC215D.992E401F-ON86257E51.005A3234-86257E51.006B2FF8@us.ibm.com>
I thought I read that Gregg already answered your question:
Gregg said: "... But we were unable to get [Poor contrast of the focus
indicator ] into WCAG - partly because it was seen as a User Agent issue
and partly because it can be addressed by CSS or AT ? so it was not seen
as an author issue. And I had to agree ? it was important but the author
was not the primary place to solve it (and not the best - since it would
vary from page to page if done by the author). However, when the author
did things in flash or other places where they created their own focus
indicators - I?m not sure how others would know where the focus was -
unless they exposed it. So maybe ?programmatically determinable? would be
good."
Since WCAG 2.4.7 is about not-hiding the focus indicator, and 1.4.3
doesn't apply to controls, strictly speaking it would "pass" the authors
responsibility, but would fail the end-users needs when the browser didn't
meet UAAG 1.3.1. Although I agree it should be recommended as a best
practice that icons, controls, and focus indicators should also have a
default minimum contrast of 4.5 to 1 for AA conformance. Remember it gets
a little tricky, or there needs to be special consideration for disabled
controls. For example, I typically recommend a 3 to 1 contrast for
disabled text on controls, and many user experience (UX) professionals do
not recommend that the focus indicator even stop on disabled controls when
tabbing.
References:
WCAG 2.4.7 Focus Visible: Any keyboard operable user interface has a mode
of operation where the keyboard focus indicator is visible. (Level AA)
Understanding Success Criterion 2.4.7
F55: Failure of Success Criteria 2.1.1, 2.4.7, and 3.2.1 due to
using script to remove focus when focus is received
F78: Failure of Success Criterion 2.4.7 due to styling element
outlines and borders in a way that removes or renders non-visible the
visual focus indicator
WCAG 1.4.3 Contrast Minimum: The visual presentation of text and images of
text has a contrast ratio of at least 4.5:1. (Level AA)Understanding
Success Criterion 1.4.3
UAAG 1.3.1 Highlighted Items: The user can specify that the following
classes be highlighted so that each is uniquely distinguished: (Level A)
Selection
Active keyboard focus (indicated by focus cursors and/or text cursors)
Recognized enabled input elements (distinguished from disabled elements)
Recently visited links
Found search results
____________________________________________
Regards,
Phill Jenkins,
IBM Accessibility
From: Sailesh Panchang <sailesh.panchang@deque.com>
To: Jonathan Avila <jon.avila@ssbbartgroup.com>
Cc: Gregg Vanderheiden <gregg@raisingthefloor.org>, Wayne Dick
<waynedick@knowbility.org>, IG - WAI Interest Group List list
<w3c-wai-ig@w3.org>
Date: 05/26/2015 10:49 AM
Subject: Re: Poor contrast on focus indicator: SC 2.4.7 failure?
Should this be documented as a failure then?
Sailesh
On 5/26/15, Jonathan Avila <jon.avila@ssbbartgroup.com> wrote:
>> But consider a case where the default focus indicator is passable. Now
if
>> the content author styles the background / foreground colors in a
manner
>> that introduces poor contrast and as a result, the focus indicator is
no
>> longer clear. It is not the browser's fault but a CSS /
author-introduced
>> issue. So is it alright to fail poor contrast on the focus indicator
under
>> SC 2.4.7?
>
> Yes definitely in my opinion.
>
> Jonathan
Received on Tuesday, 26 May 2015 19:31:25 UTC