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Sim Daltonism (available on Android devices)

Good for:

Seeing how colours are viewed from
Design, to check how different colo
Make images more accessible

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Sim Daltonism (available on Android devices)

What is Sim Daltonism?

From the perspective of someone who is colour blind or colour sensitivity issues, some colors are impossible to distinguish. Sim Daltonism lets you visualize colours as they are perceived with various types of colour blindness.

Benefits of using Sim Daltonism

  • Easily see how an image looks from the perspectiove of a colour-blind person
  • Use the app to make images more accessible
  • Tools and Features of Sim Daltonism

Tools and Features of Sim Daltonism

Sim Daltonism can simulate the vision of many forms of colour blindness:


Deuteranopia (no green cones)
Deuteranomaly (anomalous green cones)
Protanopia (no red cones)
Protanomaly (anomalous red cones)


Tritanopia (no blue cones)
Tritanomaly (anomalous blue cones)

All colours

Partial monochromacy

Note that the colours shown are only an approximation. Colour blindness varies from person to person and the simulator cannot represent everyone’s vision. Many other factors can affect the results, such as the automatic white point calibration of the camera. Nevertheless, Sim Daltonism is a good tool to better understand colour blindness.