Colour-Blindness Test

There are three main versions of colour blindness. A red-green colour deficiency, blue-yellow deficiency and total colour blindness. The most common form of colour blindness is associated with the inability to discriminate red and green wavelengths.

To see if you are colour blind try the tests below. Each image contains a number, blended using coloured dots.

• This is the test image, the number 12 should be visible to all.

Each following card varies in colour blindness intensity.

• Image number 8;
• Image number 3;
• Image number 73;
• Image number 42.

(Please read the disclaimer, with reference to test accuracy)

All information is for reference purposes only; if you have any concerns we recommend that you visit a qualified optician.

Related Eye Links:

Snellen chart.

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