WebAIM - Web Accessibility In Mind

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Re: Contrast issue

for

From: John S. Britsios
Date: May 2, 2006 6:20AM

Thank you Steven and everyone else here who have respond to our question.

The next thought of our was, while we would like to keep our colors,
would the problem be solved,
if we would provide an alternative "High Contrast" version, adding a
link to that after the link "Skip to Main Content"?

Thanks in advance again for your kind responses.

Best wishes,

John


Steven Faulkner wrote:
> I would say it does not conform to WCAG 1.0 checkpoint 2.2 (at priority
> 3)- Ensure that foreground and background color combinations provide
> sufficient contrast when viewed by someone having color deficits or when
> viewed on a black and white screen.
>
> I tested it (with the CCA 1.1
> http://www.wat-c.org/tools/CCA/1.1/index.html) using the W3C suggested
> algorithms for colour visibility and both the darkest and lightest parts
> of the gradient provide poor colour visibility.
>
> John wrote:
>
>> However, if the graphics are turned off in the browser, or the style
>> sheet is turned off, the contrast is 100% efficient.
>>
>
> I think this is beyond the point, users should not need to turn their
> style sheets or graphics off to compensate for poor contrast.
>
>
> with regards
>
> Steven Faulkner
> Web Accessibility Consultant
> vision australia - information & library service
> 454 Glenferrie Road
> Kooyong Victoria 3144
> Phone: (613) 9864 9281
> Fax: (613) 9864 9210
> Email: <EMAIL REMOVED>
> www.accessibleinfo.org.au | www.wat-c.org
>
> Download the Web Accessibility Toolbar
> [http://www.visionaustralia.org.au/ais/toolbar/]
>
> Vision Australia was formed through the merger of the Royal Blind
> Society
> NSW, the Royal Victorian Institute for the Blind, Vision Australia
> Foundation and the National Information & Library Service.
> ABN: 67 108 391 831 ACN: 108 391 831
>
>
>
>
>> -----Original Message-----
>> From: <EMAIL REMOVED>
>> [mailto: <EMAIL REMOVED> ]On Behalf Of John S.
>> Britsios
>> Sent: Friday, 28 April 2006 2:12 PM
>> To: <EMAIL REMOVED>
>> Subject: [WebAIM] Contrast issue
>>
>>
>> For our site's main navigation we have white text over a
>> graphic with a
>> gradient from darker to lighter orange.
>> The contrast here is not very great. See here: http://www.webnauts.net
>>
>> However, if the graphics are turned off in the browser, or the style
>> sheet is turned off, the contrast is 100% efficient.
>>
>> Is this an accessibility violation?
>>
>> Thanks,
>>
>> John
>>
>> --
>>
>> John S. Britsios
>> Web Architect & Marketing Consultant
>>
>> Webnauts Net
>> Koblenzer Str. 37A
>> D-33613 Bielefeld
>>
>> Telephone: (+49) 0521 - 325 99 97
>> Email: <EMAIL REMOVED> Web address: http://www.webnauts.net
>>
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--
John S. Britsios
Web Architect & Marketing Consultant

Webnauts Net
Koblenzer Str. 37A
D-33613 Bielefeld

Telephone: (+49) 0521 - 325 99 97
Email: <EMAIL REMOVED> Web address: http://www.webnauts.net

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