Sim Daltonism

Donate

Download

Sim Daltonism 1.1.2 → Mac App Store / Free
Released on October 18, 2013.

Note: Also available as a direct download (1.6 Mb)

Description

Sim Daltonism is a color blindness simulator for Mac OS X. It filters in real-time the area around the mouse pointer and displays the result — as seen by a color blind person — in a floating palette.

Since there are many types of color blindness, Sim Daltonism allow you to choose the one you want to see. Available filters are:

Monochromacy (complete)
Monochromacy (partial)
Complete or partial inability to distinguish colors. This color blindness is pretty rare.
Protanopia (complete red-green)
Protanomaly (partial red-green)
Complete or partial inability to see using long-wavelength sensitive retinal cones making hard to distinguish between colors in the green-yellow-red section of the spectrum.
Deuteranopia (complete red-green)
Deuteranomaly (partial red-green)
Complete or partial inability to see using middle-wavelength sensitive retinal cones making hard to distinguish between colors in the green-yellow-red section of the spectrum. This is the most common form of color blindness.
Tritanopia (complete blue-yellow)
Tritanomaly (partial blue-yellow)
Complete or partial inability to see using short-wavelength sensitive retinal cones making hard to distinguish between colors in the blue-yellow section of the spectrum.

Note that I do not claim to have perfect or near-perfect color blindness simulation filters. This depends on correct screen calibration and other factors I cannot control. I have limited means, but will do what I can to improve the reliability of the filter. (Contact me if you think you can help.)

This application is offered freely in an attempt to allow myself and other to ensure web and other designs are usable by color blind people.

Requirements

OS X 10.6 (Snow Leopard) or later.

See older versions of Sim Daltonism if you are using an earlier OS X version down to 10.2.8.

Known Issues

Version History

Version 1.1.2 (October 18, 2013)

Version 1.1.1 (September 18, 2013)

Version 1.1 (September 6, 2013)

Version 1.0.5 (June 20, 2011)

Version 1.0.4 (June 15, 2011)

Version 1.0.3 (September 4, 2007)

Version 1.0.2 (March 6, 2006)

Version 1.0.1 (October 3, 2005)

Version 1.0 (September 6, 2005)

Credits

Using a port of the color_blind_sims Javascript function (found at the Color Laboratory)
Copyright © 2000-2001 Matthew Wickline and the Human-Computer Interaction Resource Network

Early versions of Sim Daltonism were using MagnifiedView (Copyright © 2003 Dave Keck) for the screen capture code. That code has been rewritten entirely in version 1.0.3 to work with Mac OS X on Intel and support UI scaling.

See Also