BACKGROUND_IMAGE_READABILITY and WCAG checkpoint 2.2

On Wed, 17 Oct 2007, Charles McCathieNevile wrote:
> CMN: Also relates to WCAG 2.2

I've changed the text as follows, although I'm not happy that it covers  
all the implications of the BP:

"How does it help especially users with disabilities?: As readability is  
compromised when there is a lack of contrast caused by background images,  
this BP helps users with low vision or colour vision deficit more than  
other users."

"Does it give me WCAG 1.0 compliance?: Complying with this BP does not  
ensure compliance with any WCAG checkpoint. However it is related to WCAG  
1.0 checkpoint 6.1, “Organize documents so they may be read without style  
sheets”. If the content is not readable without a background image  
provided by a stylesheet, this checkpoint is not met. If, on any device,  
the background image gives insufficient contrast with foreground image or  
text, WCAG checkpoint 2.2, “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” is not met."



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Alan Chuter
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Received on Wednesday, 24 October 2007 15:34:40 UTC