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Re: feedback - http://www.w3.org/QA/ styling - gray text

From: olivier Thereaux <ot@w3.org>
Date: Tue, 15 Aug 2006 09:47:57 +0900
Message-Id: <B8C7C311-767B-4037-A47B-00B31B1A762A@w3.org>
Cc: www-qa@w3.org
To: Daniel Barclay <daniel@fgm.com>

Hello Daniel.

On Aug 15, 2006, at 04:29 , Daniel Barclay wrote:
> On the page at http://www.w3.org/QA/, it appears that much of the text
> is some shade of gray (instead of being fully black).

Indeed, the text is a dark gray with a very slight blue hue, which  
was meant to be more pleasing to the eye given the colors on the rest  
of the page.

> Given that CRT and LCD displays already have limited contrast, why  
> throw
> away even more of the available contrast and make things harder to  
> read
> by using gray text?

I would agree with you if the background had been a shade of gray  
close to that of the text, but with a plain white background  
(luminance 100), the #33444A text (luminance 27) seems to be more  
than enough: calculations show that the luminosity contrast ratio for  
that text is 10.5, which satisfies even the highest level mentioned  
by the web content acessibility guidelines:
http://www.w3.org/TR/WCAG20/guidelines.html#visual-audio-contrast- 
contrast

Could we have chosen plain black instead? yes. But the colors chosen  
appear to be a better tradeoff between aesthetic value (which is  
always arguable) and accessibility (which is rather relative, but we  
are in a very safe range).

regards,
-- 
olivier
Received on Tuesday, 15 August 2006 00:47:13 GMT

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