Designing for Accessibility
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colour – what appears on the screen is often quite different to what you asked for. They get worse in bright light.
* Paper is usually colour blind. Most people print on black-and-white laser printers. There’s no colour reproduction at all. The printout is the most durable reproduction of your webpages!
How can you check?
* The easiest way to check a web page is to print it out on a monochrome printer. (Don’t cheat – remove any printer-specific CSS from the page)
* There are more sophisticated tools available at the Colorblind Web Page Filter. It will show you your website in various kinds of simulated colour-blindness.
* Finally, you can get special boxes which you plug in-line with your monitor to make it simulate various kinds of colour-blindness.