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Additional Resources

View WAI Checkpoint 2.1 - Don't rely on color alone.

Go to Vischeck.com - See how a page would appear to a user who is colour blind.

Priority 1 Item 2
Ensure that all information conveyed with color is also available without color, for example from context or markup.

Do

Place the requested information in the following form. Items marked with a * are required.

Don't Do

Place the requested information in the following form. Items in red are required.

Tip:
It is impossible or difficult for persons who are blind, have limited sight or are color-blind to discern information solely conveyed by color. By using an identifying character, such as an asterisk, a visually impaired person will be much more likely to discern the information.