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Re: CFC Add User Interface Component Contrast (Minimum) to Editors Draft

From: Laura Carlson <laura.lee.carlson@gmail.com>
Date: Wed, 21 Jun 2017 06:49:31 -0500
Message-ID: <CAOavpvdBN_fD1r+DgWd1t-eEMPJJd+KojFP-SZOoVbkKwthtXg@mail.gmail.com>
To: Joshue O Connor <josh@interaccess.ie>
Cc: WCAG <w3c-wai-gl@w3.org>
+1

On 6/20/17, Joshue O Connor <josh@interaccess.ie> wrote:
> Hi all,
>
> I placed older SC text into the CFC - The current SC text for this one
> is: [1]
>
> Essential
> <https://rawgit.com/w3c/wcag21/user-interface-component-contrast-minimum_ISSUE-10/guidelines/index.html#dfn-essential>visual
>
> identifiers ofuser interface components
> <https://rawgit.com/w3c/wcag21/user-interface-component-contrast-minimum_ISSUE-10/guidelines/index.html#dfn-user-interface-component>have
>
> acontrast ratio
> <https://rawgit.com/w3c/wcag21/user-interface-component-contrast-minimum_ISSUE-10/guidelines/index.html#dfn-contrast-ratio>of
>
> at least 4.5:1 against the immediate surrounding color(s), except for
> the following situations:
>
>   * *Thicker:*Acontrast ratio
>
> <https://rawgit.com/w3c/wcag21/user-interface-component-contrast-minimum_ISSUE-10/guidelines/index.html#dfn-contrast-ratio>of
>     at least 3:1 is required where the minimum width and height are at
>     least 3CSS pixels
>
> <https://rawgit.com/w3c/wcag21/user-interface-component-contrast-minimum_ISSUE-10/guidelines/index.html#dfn-css-pixel>,
>     for theessential
>
> <https://rawgit.com/w3c/wcag21/user-interface-component-contrast-minimum_ISSUE-10/guidelines/index.html#dfn-essential>visual
>     identifier.
>   * *Inactive:*Disabled or otherwise inactiveuser interface components
>
> <https://rawgit.com/w3c/wcag21/user-interface-component-contrast-minimum_ISSUE-10/guidelines/index.html#dfn-user-interface-component>
>   * *User agent control:*The color(s) of the user interface component
>     and any adjacent color(s) are determined by the user agent and are
>     not modified by the author.
>
>
>         Notes§
>
> <https://rawgit.com/w3c/wcag21/user-interface-component-contrast-minimum_ISSUE-10/guidelines/index.html#user-interface-component-contrast-minimum>
>
>   * Examples ofessential
>
> <https://rawgit.com/w3c/wcag21/user-interface-component-contrast-minimum_ISSUE-10/guidelines/index.html#dfn-essential>visual
>     indicators ofuser interface components
>
> <https://rawgit.com/w3c/wcag21/user-interface-component-contrast-minimum_ISSUE-10/guidelines/index.html#dfn-user-interface-component>may
>     include (a border, edge, or icon), current value (such as non-text
>     visual indication of aria-valuenow on a slider) and current state
>     (such as selection indicator, focus indicator) or other essential
>     visual indication (which do not rely on color alone).
>   * Under consideration: simplify this Success Criterion by setting the
>     minimum color contrast requirement to 3:1 and removing any need for
>     measuring thickness.
>   * Under consideration: will review to see if it is possible to combine
>     with proposed WCAG 2.1 SC 1.4.11 Graphics Contrast.
>
>
> Thanks
>
> Josh
>
> [1]
> https://rawgit.com/w3c/wcag21/user-interface-component-contrast-minimum_ISSUE-10/guidelines/index.html#user-interface-component-contrast-minimum
>
>
>
>
>
>
> Joshue O Connor wrote:
>> Call For Consensus — ends FridayJune 23rd at 1:00pmBoston time.
>>
>> The Working Group has reviewed and approved a Success Criterion for
>> inclusion in the Editor’s Draft: "User Interface Component Contrast
>> (Minimum)" with the goal of obtaining additional input external to the
>> working group.
>>
>> SC TEXT:
>>
>> User Interface Component Contrast (Minimum)*:*
>>
>> Essential visual identifiers of user interface components have a
>> contrast ratio of at least 4.5:1 against the immediate surrounding
>> color(s), except for the following situations:
>>
>>  1. *Thicker:*A contrast ratio of at least 3:1 is required where the
>>     minimum width and height are at least 3 CSS pixels, for the
>>     essential visual identifier.
>>  2. *Inactive:*Disabled or otherwise inactive user interface
>>     components are exempt from this requirement.
>>  3. *User agent control:*The color(s) of the user interface component
>>     and any adjacent color(s) are determined by the user agent and are
>>     not modified by the author.
>>
>> Survey results:
>> https://www.w3.org/2002/09/wbs/35422/March14SCReviews/results#xq9
>> GIT Hub: https://github.com/w3c/wcag21/issues/10
>>
>> The new SC can be reviewed here, in the context of the full draft:
>>
>> https://rawgit.com/w3c/wcag21/user-interface-component-contrast-minimum_ISSUE-10/guidelines/index.html#user-interface-component-contrast-minimum
>>
>> 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.
>>
>> Thanks
>> --
>> Joshue O Connor
>> Director | InterAccess.ie
>
> --
> Joshue O Connor
> Director | InterAccess.ie
>


-- 
Laura L. Carlson
Received on Wednesday, 21 June 2017 11:50:04 UTC

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