Color Blind Test

A digital adaptation of the Ishihara color vision test. Colored dot patterns conceal numbers — people with normal color vision see them instantly. Color blind individuals cannot. Find out in 60 seconds.

Coming soon.

01 /How to Play

A circular pattern of colored dots will appear on screen.
A number is hidden within the dots — visible to people with normal color vision.
Enter the number you see using the keypad. If you see nothing, enter 0.
Complete all rounds — your color vision profile is calculated at the end.
Results show which color channels may be affected.

02 /The Science

The Ishihara color vision test, developed by Dr. Shinobu Ishihara in 1917, uses pseudoisochromatic plates — dot patterns where numbers are distinguishable by hue but not by luminance. Red-green color blindness (deuteranopia and protanopia) affects approximately 8% of males and 0.5% of females of Northern European descent. The condition results from absence or malfunction of cone photoreceptors in the retina. This digital adaptation uses the same psychophysical principles as the clinical plates.

Population Distribution

Based on population research data

03 /Pro Tips

View the test in good lighting — avoid dimly lit rooms.
Don't zoom in — view at normal screen distance.
If you're uncertain, go with your first impression.
Some plates test for different color blindness types — answer what you genuinely see.
Color blindness is hereditary and cannot be corrected by practice.