Colour blindness is the reduced ability to distinguish between certain colours. It is usually inherited, but can also occur as a result of eye, nerve, or brain damage, or exposure to certain chemicals. It is more common in men than in women—affecting about one in 20 men and around one in 200 women.

Run a simulation

  1. JPEG, GIF and PNG image formats are accepted.

  2. We'll send the results of your colour blindness simulation to this address.

This site simulates three different colour blindness conditions: Protanopia, Deuteranopia and Tritanopia. It costs £1.00 (approx $1.60 USD/€1.20 EUR) for all three simulation images, which are yours to download and keep.

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