For these viewers with color blindness, the text and images may be fuzzy and unrecognizable. Fortunately, numerous assistive software products exist for color-blind people using a Windows computer.

Biologists modified simple electronics to create a color vision test for fiddler crabs and other animals.

BUT, is this color test truly accurate? The online debunking site Snopes reports computer monitors are not capable of displaying the range of colors required for this test.