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RE: A few issues with the proposed definition of contrast

From: Sean Hayes <Sean.Hayes@microsoft.com>
Date: Mon, 12 Mar 2007 11:48:46 +0000
To: Christophe Strobbe <christophe.strobbe@esat.kuleuven.be>, "w3c-wai-gl@w3.org" <w3c-wai-gl@w3.org>
Message-ID: <7261AC2A5F73904CA41773C8F00813FF1C670D3F@EA-EXMSG-C309.europe.corp.microsoft.com>

We can't, since css3 colour is only a CR, and has been for several years. Besides CSS3 colour introduces varying opacity in colours, which is not accounted for in the contrast model.

Sean Hayes
Standards and Policy Team
Accessible Technology Group
  mob +44 7977 455002
  office +44 117 9719730

-----Original Message-----
From: w3c-wai-gl-request@w3.org [mailto:w3c-wai-gl-request@w3.org] On Behalf Of Christophe Strobbe
Sent: 12 March 2007 11:35
To: w3c-wai-gl@w3.org
Subject: Re: A few issues with the proposed definition of contrast

Sean pointed out that the definition of colour is not testable with the use of system colours, since we don't know what the colours actually are.

Tim Boland responded:
System colors are deprecated in the CSS3 Color Module.

But how do you prevent people from sticking to CSS 2, in which system colours are not deprecated?

Best regards,


Christophe Strobbe
K.U.Leuven - Departement of Electrical Engineering - Research Group on Document Architectures Kasteelpark Arenberg 10 - 3001 Leuven-Heverlee - BELGIUM
tel: +32 16 32 85 51

Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
Received on Monday, 12 March 2007 11:52:27 UTC

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