Sim Daltonism

Sim Daltonism: Color Blindness Simulator for macOS

Free color blindness simulator for macOS, simulating protanopia, deuteranopia, tritanopia and more, to help users understand color vision deficiencies.

What is Sim Daltonism?

Sim Daltonism is a free application for macOS that allows users to simulate different types of color vision deficiency, also known as color blindness. It was developed by Michel Fortin in 2020 as an easy way for those with normal color vision to understand what the world looks like to those with various types of color blindness.

The app provides simulations for the most common types of color blindness including protanopia (red deficiency), deuteranopia (green deficiency), tritanopia (blue deficiency), protanomaly, deuteranomaly, tritanomaly, cone monochromacy, rod monochromacy, and cerebral achromatopsia (total color blindness). Users can simply launch the app and it will overlay their screen with the chosen color blindness simulation in real time.

By simulating different types of color blindness on their own computer screen, users can get an idea for some of the challenges faced in daily life by those with color vision deficiencies. The app helps bring awareness to color blindness and allows for better design, communication, and accessibility for the color blind community. Teachers and employers often use Sim Daltonism to evaluate the accessibility of their materials and interfaces.

Key features include the ability to compare normal vision to color blind vision side-by-side, customize the severity of deficiency simulations, and simulate age-related vision loss. The app is very lightweight and available for free, making it easy for anyone on a Mac to test out multiple color blindness perspectives.

Sim Daltonism Features

Official Links