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RE: Color contrast (Minimum)

From: SALES, TERRY LYNN <TERRYLYNN.SALES@cbp.dhs.gov>
Date: Tue, 16 Aug 2016 19:12:07 +0000
To: Phill Jenkins <pjenkins@us.ibm.com>
CC: "Ta, Duc" <duc.ta.740@my.csun.edu>, IG - WAI Interest Group List list <w3c-wai-ig@w3.org>
Message-ID: <CD6739563257E640956C81ABE78DD091DD0AA5D8@D2ASEPREA011>
DHS currently excludes "nonactive" elements. However, because some applications you can tell what you did wrong by what's disabled, I make our developers make them pass 4.5:1 for disabled anyway. Usually using grays.

________________________________
From: Phill Jenkins
Sent: Tuesday, August 16, 2016 3:01:36 PM
To: SALES, TERRY LYNN
Cc: Ta, Duc; IG - WAI Interest Group List list
Subject: RE: Color contrast (Minimum)

I agree the example fails.

I'm curious what contrast ratio DHS uses for so called grayed out (e.g. disabled) text and icons?

1.4.3<http://www.w3.org/TR/2008/REC-WCAG20-20081211/#visual-audio-contrast-contrast>Contrast (Minimum): The visual presentation of text<http://www.w3.org/TR/2008/REC-WCAG20-20081211/#textdef>and images of text<http://www.w3.org/TR/2008/REC-WCAG20-20081211/#images-of-textdef> has a contrast ratio<http://www.w3.org/TR/2008/REC-WCAG20-20081211/#contrast-ratiodef> of at least 4.5:1, except for the following:

  *   . . . Incidental: Text or images of text that are part of an inactive user interface component<http://www.w3.org/TR/2008/REC-WCAG20-20081211/#user-interface-componentdef>, . . .

Some accessibility professionals are recommending a 3:1 ratio as a best practice for inactive elements.
___________
Regards,
Phill Jenkins,
Senior Accessibility Engineer
IBM Research - IBM Accessibility
ibm.com/able<http://www.ibm.com/able>
facebook.com/IBMAccessibility<http://www.facebook.com/IBMAccessibility>
twitter.com/IBMAccess<http://twitter.com/IBMAccess>
ageandability.com




From:        "SALES, TERRY LYNN" <TERRYLYNN.SALES@cbp.dhs.gov>
To:        "Ta, Duc" <duc.ta.740@my.csun.edu>, IG - WAI Interest Group List list <w3c-wai-ig@w3.org>
Date:        08/16/2016 09:49 AM
Subject:        RE: Color contrast (Minimum)
________________________________



Id fail it but we apply the 4.5:1 to all text in DHS.  Functionally, its not readable.

Terry Lynn (TL) Sales
Section 508 and UI Tester
DHS/CBP/OIT/CSPD
571-468-5271 Desk
703-945-2777 BBerry

From: Ta, Duc [mailto:duc.ta.740@my.csun.edu]
Sent: Tuesday, August 16, 2016 10:19 AM
To: IG - WAI Interest Group List list <w3c-wai-ig@w3.org>
Subject: Color contrast (Minimum)

Hi,

I have a question. I know large text that pass color contrast ratio of 3:1 would pass the color contrast. Is it possible to consider this as failure if it is barely readable with black and white or color blinded people?

Example
[Inline image 1]



Best,
Duc Ta





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Received on Tuesday, 16 August 2016 19:13:07 UTC

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