Designing accessible web resources (CD) > Resources on design for access and usability > Designing for people with colour deficient vision
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Guides
Designing for people with colour deficient vision Online tools for insight into screen readers and screen magnifiers Resources for people with a disability on how to use the web |
Safe Web Colours for Colour-deficient vision BTexact Technologies http://more.btexact.com/people/rigdence/colours/index.html This site contains information on colour blindness as well as tools for design. The Eye of the Beholder - Designing for Colour-Blind Users Christine Rigden, British Telecommunications Engineering Journal, Vol 17 Jan 1999 http://more.btexact.com/people/rigdence/colours/colours.pdf Colour is increasingly used these days to help convey information. According to this article, one in twelve men has some measurable degree of colour vision deficiency. The use of certain colours in certain ways can cause difficulty when navigating web pages or software, and even total illegibility in some cases. This article offers a method for representing images as perceived with a colour deficiency, so designers can produce interfaces which avoid causing problems for their users. Some aspects of this article will present some access barriers, due to its layout and use of images to show examples of colour perception. Seeing Red IA Think http://www.iathink.com/2004/01/seeing_red.html This is an article on the use of red to convey information on the web. Website Tips - Colour http://www.websitetips.com/color/ This site provides many links to many resources on colour and design. Colour Blindness http://trace.wisc.edu/world/web/index.html Scroll down to the heading, Colour Blindness. This site gives a list of links to many useful resources. What do colour-blind people see? http://www.tsi.enst.fr/%7ebrettel/colourblindness.html This site gives very useful simulation and checking tools. Colour Blind Awareness and Support Group Australia http://members.optusnet.com.au/~doverton/index.html The author describes the experience of colour blind or colour deficient vision. Considering the Color Blind http://webtechniques.com/archives/2000/08/newman/ An easy to read description of colour blindness and some strategies for considering web site visitors who have colour deficient vision. Colorblind Design Evaluation http://newmanservices.com/colorblind/default.asp This online tool gives you 3 ways to see how colours used in HTML code look to people who are colour-blind. Colorfield Insight Plug-in http://www.colorfield.com/insight/ You can download a free tool (Mac only) from this site, to test how images would look to people with colour deficient vision. There is also a tutorial on colour deficient vision. Vischeck Vischeck is a free tool for simulating how an image would look to a person with colour vision deficiency. The examples link gives very useful examples of two different forms of colour deficiency and how they would each affect how a person sees an image. The site also offers a tool called Daltonize, which claims to enhance images to make colour more available to people with colour deficient vision. Colormatters – The Future of Color on the World Wide Web http://www.colormatters.com/comput.html This site looks at a wide range of issues about the use of colour, including:
Colors for the Color Blind http://www.toledo-bend.com/colorblind/index.html According to this site, it is about: … color blindness or, more correctly, color deficiency. Briefly, it describes the condition, causes, and effects. The primary purpose, however, is to furnish a set of color charts to aid the color blind in working with computer colors, most especially on the internet and in web sites. There is also some really nice software (shareware/freeware) here for checking colors onscreen on your computer - great for anyone, but especially for the colorblind! Color Blind Home page http://colorvisiontesting.com/ This site gives comprehensive information on colour-blindness, causes and effects. It also presents a simple online test for colour blindness. |