Free Ishihara Test Online
18 Ishihara plates · Ishihara color test online · results in under 2 minutes
Free Online Color Blindness Test
Take our free Ishihara color blind test to check for red-green color blindness, deuteranopia, protanopia, and tritanopia. Get instant results with our scientifically-designed 18-plate color vision screening test. No registration required.
- Disable dark mode and blue-light filters (Night Shift, f.lux)
- Set screen brightness to at least 80%
- Ensure you are in a neutral lighting environment
- View screen from a normal reading distance
About the Ishihara Color Vision Test
The Ishihara test online is the most widely used screening format for color blindness. Each plate hides a number in colored dots—people with normal vision read it clearly; many with CVD see a different number or none at all.
This free Ishihara test includes 18 plates and screens for deuteranopia, protanopia, tritanopia, and related deficiencies. For the same tool under another URL, see our color blind test.