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Color Blindness Test
View each dot plate and type the number you see. This screens for red-green colour vision differences using Ishihara-style plates.
This is a fun screening, not a medical diagnosis. Screen calibration and brightness affect results — see an optometrist for a real test.
Plate 1 of 6
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How to take the test
- Sit at a comfortable distance with your screen at normal brightness.
- Look at each plate and type the number you can read — leave it blank if you can't see one.
- After the last plate you'll see how many you matched and what that may suggest.
About red-green colour vision
The most common colour vision differences are red-green types (protan and deutan), affecting roughly 1 in 12 men and 1 in 200 women. Ishihara-style plates hide a figure in dots that differ mainly by hue, so they're hard to read if those hues look similar to you.
Frequently asked questions
Is this accurate?
It's a rough screening only. Real diagnosis needs calibrated plates and a professional.
Why might I fail on one device but not another?
Different screens render colours differently. That's exactly why an online test can't replace a clinical one.