Everyone

iGreen Software

Froyo

Welcome to Color Blindness Test, a small game that allows you to check your color vision.

The Ishihara Color Test is an example of a color perception test for red-green color deficiencies. It was named after its designer, Dr. Shinobu Ishihara. The test consists of a number of colored plates, called Ishihara plates, each of which contains a circle of dots appearing randomized in color and size. Within the pattern are dots which form a number or shape clearly visible to those with normal color vision, and invisible, or difficult to see, to those with a red-green color vision defect, or the other way around. The seemingly random colored dots are arranged in such a fashion that a person with normal color vision will see a single-digit or two-digit number within the array of dots, while a colorblind person will either be unable to see a number or will see a different number than the one seen by a person with normal color vision.

   A color blind test should be given to anyone considering a profession where accurate color perception is essential. Examples include car driver, electricians, commercial artists, designers, technicians, and certain manufacturing and marketing personnel.

Color Blindness Test

Latest Version of Color Blindness Test