Ishihara Test for Color Blindness |
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What numbers do you see revealed in the patterns of dots below? |
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| I am color blind, as is about 12 - 20 percent (depending on whose figures you want to believe) of the white, male population and a tiny fraction of the female population. Most of these circles are nothing but spots to me. Below are the correct answers to what a person with normal color vision would see - and what I see (and most people with Red-Green color blindness). When you see what we can't see, you may understand why it's so tough to find the right sox and why we like bright colors, which are often identifiable. | |||||
Normal Color Vision |
Red-Green Color Blind |
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| Left | Right | Left | Right | ||
| Top | 25 | 29 | Top | 25 | Spots |
| Middle | 45 | 56 | Middle | Spots | 56 |
| Bottom | 6 | 8 | Bottom | Spots | Spots |
Another interesting color blindness test is below |
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The test to the left is simpler.
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Another series of color vision tests can be
found
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1 in 12 people have some sort of color deficiency. When you're designing for
the web, this means that 1 in 12 people might not be able to see your site.
That's alot of people. This tool helps you simulate the appearance of our
site's colors for people with different color visions. Select text and
background colors from the palette below, then choose a color vision mode.
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Sample Text
Lorum ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laroreet. Lorum ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laroreet. |