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Color

People who are blind cannot see any color at all. People with low vision may be able to see some or most colors but certain shades may be difficult to distinguish. And people with color blindness may be able to see colors just fine, but may not be able to distinguish certain combinations of colors, to include red and green, or red and black.

An example Color-Blind Test:



In the above image, moving clockwise from the top: The number 16; The number 9; the number 12; the number 74.

 

The point here is to be aware of how colors can or cannot be perceived. It is critical that color is not used as the only way to communicate or distinguish information. Be sure to include textual information that convey what the colors also indicate.

 

Bad Example:

 

 

Which is the square?

Red
Green
Yellow
Blue
Orange

 

Good Example:

Which is the square?

1
2
3
4
5

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