Free colorblind test

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Did you know that ...
1 in 10 men are color blind?

However, this stern statistic is mostly true only for Western societies. In comparison, only 1 in 100 Inuit men are color blind.

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Did you know that ...
bulls don't actually react to red?

Bulls are completely color blind. They charge the red cape because it is moving, not because it is red.

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Did you know that ...
some animals can see more colors than people?

Bees and butterflies can see colors people never see.

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Did you know that ...
people don't see colors at night?

Most people usually find it difficult to recognize colors at night in dim moonlight. However, geckos and frogs, for example, can see colors only when it's dark.

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