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RE: Color contrast (Minimum)

From: Phill Jenkins <pjenkins@us.ibm.com>
Date: Tue, 16 Aug 2016 14:01:36 -0500
To: "SALES, TERRY LYNN" <TERRYLYNN.SALES@cbp.dhs.gov>
Cc: "Ta, Duc" <duc.ta.740@my.csun.edu>, IG - WAI Interest Group List list <w3c-wai-ig@w3.org>
Message-Id: <OF024AB9D3.86C368EA-ON86258011.00680598-86258011.0068848F@notes.na.collabserv.com>
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 Contrast (Minimum): The visual presentation of text and images of 
text has a contrast ratio 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, . . . 

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
facebook.com/IBMAccessibility
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)



I?d fail it but we apply the 4.5:1 to all text in DHS.  Functionally, it?s 
not readable.
 
Terry Lynn (TL) Sales
Section 508 and UI Tester
DHS/CBP/OIT/CSPD
571-468-5271 Desk
703-945-2777 B?Berry
 
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

 
 
 
Best,
Duc Ta






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Received on Tuesday, 16 August 2016 19:02:09 UTC

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