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

From: Joshue O Connor <josh@interaccess.ie>
Date: Tue, 20 Jun 2017 19:52:48 +0100
Message-ID: <59496F00.7010201@interaccess.ie>
To: WCAG <w3c-wai-gl@w3.org>
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
Received on Tuesday, 20 June 2017 18:53:41 UTC

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