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Use of color information for contextual distinction

From: WCAG 2.0 Comment Form <nobody@w3.org>
Date: Sun, 24 Jun 2007 10:28:05 +0000 (GMT)
To: public-comments-wcag20@w3.org
Message-Id: <20070624102805.ABDF16636D@dolph.w3.org>

Name: levy
Email: aurelien.levy@free.fr
Affiliation: tektonika
Document: UW
Item Number: Understanding Success Criterion 1.4.1
Part of Item: Techniques
Comment Type: technical
Summary of Issue: Use of color information for contextual distinction
Comment (Including rationale for any proposed change):
make sure cleary define : Ensuring that when text color is used to convey information, the text style is visually differentiated without color (future link) for exemple is this a failure :

- Use a different color scheme between two category of a website 

- Use background color to show what is the currently visited page in a navigation bar

Currently, the background color of an element to give information is not treated at all.

Furthermore, without color is equal to turning off color only or style too ?

I think the G111 technique can\'t be achieve in every case specialy in maps, you must add the text information case like G111: Using color and pattern or texual information.

If i have a map with two road to go to a point, i can use two different colors for the two roads put i can identify road in text like road 1 abd road 2

Finaly , i think the F73: Failure of SC 1.4.1 due to creating links that are not visually evident without color vision must me more clear to directly identify that it\'s just for links within text that is part of a sentence or paragraph. 

Even with that i\'m not sure it\'s a good point because bold or italicized text can be hard to read in some case so the only way i have is to underline the link. 

I think the link must be visualy different but i think color difference can be sufficient if the color difference is sufficient.

Exemple: red link and black text pass the test, dark grey link and black text fail. People who actualy didn\'t see the red still see a color difference.

Proposed Change:
Received on Sunday, 24 June 2007 10:28:10 UTC

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