Color Blind Visualiser

Converts camera image to simulate various color vision deficiencies.

This app converts the camera image to visualise what a person with Color Vision Deficiency (CVD) would see.

Use the app to get a better understanding of how a color blind person sees the world, or to help in designing content suitable for those with CVD.

To see color, the eye uses three types of photoreceptor cone cells (L, M and S) which are sensitive to different frequencies of light.

When one or more of these is absent or has reduced capability, we have color vision deficiency (aka color blindness). The three types of dichromacy are:

Protanopia - Deficient in L type cone cells

Deutanopia - Deficient in M type cone cells

Tritanopia - Deficient in S type cone cells

Protanomaly, deuteranomaly and tritanomaly is when there is some capability from the deficient cone cell type. To simulate anomalous trichromacy, use the slider to step between trichromacy (normal vision) and dichromacy in 10% steps.

The majority of people with color blindness suffer from protanopia, deuteranopia, or their anomalous forms. Both are often referred to as red-green color blindness and have similar colors that get confused. Protanopia and deuteranopia is more common in males (approx 8%, compared to 0.5% in females). Tritanopia is much less common. Monochromacy is when two or more cone cell types are absent and is also much less common.

Select between these 4 types of color blindness using the Protan/Deutan/Tritan/Mono buttons.

For indication only. The accuracy of the camera and display in measuring/showing the color will vary between devices. The RGB gamut does not represent all possible visible colors, some approximations are made.