Re: CFC - Updated Response to issues 649, 616, 411, 282, 680, and 686 on Graphics Contrast


I believe the response to Karl Grove's points in 649 could include a 
reference to 1.4.1 Use of Color. If the only means of distinguishing the 
states of a control was through differences in colour, then arguably those 
colour differences would have to meet 3:1 in order to satisfy 1.4.1. 
Although not perfectly applicable, there is precedent established for this 
kind of consideration in the technique and explanation in
G183: Using a contrast ratio of 3:1 with surrounding text and providing 
additional visual cues on focus for links or controls where color alone is 
used to identify them 

And of course changes in colour for a control is not the only means of 
indicating changes in state -- focus indictors and other outline effects 
are just one possible alternative.

Michael Gower
IBM Accessibility

1803 Douglas Street, Victoria, BC  V8T 5C3
voice: (250) 220-1146 * cel: (250) 661-0098 *  fax: (250) 220-8034

From:   Andrew Kirkpatrick <>
To:     WCAG <>
Date:   2018-01-17 06:38 PM
Subject:        CFC - Updated Response to issues 649, 616, 411, 282, 680, 
and 686 on  Graphics Contrast

Call For Consensus — ends Friday January 19th at 9pm Boston time.
The Working Group has discussed responses to the following issues:
649: (
616: (
411: (
282: (
680: (
686: (
Response to Issue 649:

Response to Issue 616:

Response to Issue 411:

Response to Issue 282:

Response to Issue 680:

Response to Issue 686:

The changes to the SC are implemented in this pull request:

The changed SC can be viewed here:

If you have concerns about this proposed consensus position that have not 
been discussed already and feel that those concerns result in you “not 
being able to live with” this decision, please let the group know before 
the CfC deadline.
Andrew Kirkpatrick
Group Product Manager, Accessibility


Received on Friday, 19 January 2018 02:51:31 UTC