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Re: testing for color contrast as a totally blind tester

for

From: Bryan Garaventa
Date: Jan 5, 2013 11:59AM

BX is a JAWS script developed by Doug Lee, which allows for DOM tree
traversal, MSAA traversal, and quite a few other things, geared for blind
developers to examine runtime objects.

I use this every day for both testing and development.


----- Original Message -----
From: "Birkir R. Gunnarsson" < <EMAIL REMOVED> >
To: "WebAIM Discussion List" < <EMAIL REMOVED> >
Sent: Saturday, January 05, 2013 8:28 AM
Subject: Re: [WebAIM] testing for color contrast as a totally blind tester


> Hi Bryan and all.
>
> I grudgingly admit my ignorance and have to ask "what is BX"?
> Thanks
> -B
>
> On 1/5/13, Bryan Garaventa < <EMAIL REMOVED> > wrote:
>> It is possible for someone who is totally blind to check color contrast
>> up
>> to a point.
>>
>> If using BX, you can use the HTML map to navigate to a DOM node, press
>> ctrl+shift+s twice to show a list of all browser styles applied to the
>> element, including background-color and color property values, which can
>> then be compared using the checker at
>> https://www.ssbbartgroup.com/reference/index.php/Color_Contrast_Checker
>>
>> James is right, it's necessary for sighted assistance to evaluate
>> background
>>
>> images and graphic coloration though.
>>
>>
>> ----- Original Message -----
>> From: "James Nurthen" < <EMAIL REMOVED> >
>> To: < <EMAIL REMOVED> >; "WebAIM Discussion List"
>> < <EMAIL REMOVED> >
>> Sent: Friday, January 04, 2013 8:03 PM
>> Subject: Re: [WebAIM] testing for color contrast as a totally blind
>> tester
>>
>>
>>> It is not possible for someone who is totally blind to check for colour
>>> contrast. While automated tools can determine the contrast of simple
>>> text
>>> on a simple background, there are too many places where automated tools
>>> cannot reliably determine the colour contrast.
>>> Some examples of these are when using background images, background
>>> gradients and background colours using alpha (transparency).
>>> Regards,
>>> James.
>>>
>>>
>>> On Friday, January 4, 2013, Reinhard Stebner wrote:
>>>
>>>> Does anyone know of any tools that a totally blind person can use to
>>>> test
>>>> for color contrast on web sites?
>>>>
>>>> >>>> >>>> >>>>
>>> >>> >>> >>
>> >> >> >>
> > >