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From: Holly Marie
Date: Tue, Apr 29 2003 5:37PM
Subject: Colorblindness: Colour Picker and Tester
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Text color vs background color.

this is interesting. I am not sure how accurate this is[it asks for
feedback from color blind testers] But one can Check color combos for 3
types at one time, and the difference between a display using thousands
of colors versus a display only capable of 256 colors.

[quoted] Browser note: On a Mac, this page works in Opera 5+, MSIE 4+
and Netscape 6.0 (if a little flakily) but not Netscape 4.7. Any other
browser feedback gratefully received.[end quoted]

It also gives a difference in Brightness Value percentage.
It gives a contrast value percentage.
And it gives a difference in total RGB value by percentage.

?

Color Tester
http://www.tesspub.com/colours.html

holly


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From: Benjer
Date: Wed, Apr 30 2003 1:29AM
Subject: Re: Colorblindness: Colour Picker and Tester
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On 30/4/03 1:32 am, "Holly Marie" < = EMAIL ADDRESS REMOVED = > wrote:

> Text color vs background color.
>
> this is interesting. I am not sure how accurate this is[it asks for
> feedback from color blind testers] But one can Check color combos for 3
> types at one time, and the difference between a display using thousands
> of colors versus a display only capable of 256 colors.
>
> [quoted] Browser note: On a Mac, this page works in Opera 5+, MSIE 4+
> and Netscape 6.0 (if a little flakily) but not Netscape 4.7. Any other
> browser feedback gratefully received.[end quoted]
>
> It also gives a difference in Brightness Value percentage.
> It gives a contrast value percentage.
> And it gives a difference in total RGB value by percentage.
>
> ?
>
> Color Tester
> http://www.tesspub.com/colours.html

Has anyone ever come across VisCheck before - seems to be very good, it will
check your webpage against the 3 types of colour blindness and upload an
image of how it would appear:

http://www.vischeck.com/vischeck/

benjer



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