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Re: Color contrast principle

From: Mike Elledge <melledge@yahoo.com>
Date: Thu, 17 Jan 2019 18:30:29 +0000 (UTC)
To: Alastair Campbell <acampbell@nomensa.com>, Laura Carlson <laura.lee.carlson@gmail.com>
Cc: "WCAG list (w3c-wai-gl@w3.org)" <w3c-wai-gl@w3.org>
Message-ID: <5955332.1253689.1547749829514@mail.yahoo.com>
 +1
    On Thursday, January 17, 2019, 8:31:03 AM EST, Laura Carlson <laura.lee.carlson@gmail.com> wrote:  
 
 +1 on this latest version.

On 1/17/19, Alastair Campbell <acampbell@nomensa.com> wrote:
[snip]

> that would make it:
>
> If components use several colors, any color which does not interfere with
> identifying the component can be ignored for the purpose of measuring
> contrast ratio. For example, a 3D drop-shadow on an input, or a dark border
> line between contrasting [backgrounds is considered to be subsumed into the
> color closest in brightness (luminance)].
>
> The following example shows an input that has a light background on the
> inside and a dark background around it. The input also has a dark grey
> border which [is considered to be subsumed] into the dark background. The
> border does not interfere with identifying the component, so the contrast
> ratio is taken between the white background and dark blue background.
[snip]

Kindest Regards,

Laura

-- 
Laura L. Carlson

  
Received on Thursday, 17 January 2019 18:30:53 UTC

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