What I came up with is called Sim Daltonism. It’s a color blindness simulator for the Mac. Sim Daltonism? Yes. A simulator for color blindness. The app is free and works in real time on your Mac. Let me explain.
See What Others See (or don’t)
Color blindness is the inability or decreased ability to perceive color differences, usually under normal lighting conditions.
In other words, those with color blindness don’t see color the way most people do. It’s not blindness, of course. But there is a deficiency in viewing color.
It’s sometimes called Daltonism because English physicist John Dalton was the first to do research into color blindness.
The free Sim Daltonism app displays a real time filter around the area of the Mac’s screen pointer and displays the result– as seen by a color blind person– in a nearby floating palette.
The problem, of course, is that there are many types of color blindness, and many different degrees.
Sim Daltonism lets you choose the type you want to display on the Mac’s screen. Here’s an example of Deuteranopia.
Here’s another example of how Sim Daltonism displays what those with red-green blindness and blue-yellow blindness see (instead of the normal green frog on a leave).
The filters in Sim Daltonism include Monochromacy (complete and partial), Protanopia (complete and partial red-green), Deuteranopia (complete and partial red-green), Tritanopia (complete and partial blue-yellow), as well as variants Proanomaly, Deuteranomaly, and Tritanomaly.
Variances in the Mac’s screen may account of differences not maintained by the limited number of filters. Still, Sim Daltonism is a good way to check correct colors in graphic designs, website color schemes, to see how color will be viewed by those with color blindness.