Free Color Blind Test Online
18 Ishihara plates · free colour vision test · no signup · 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
Free Online Color Blindness Test
This screening uses 18 Ishihara-style plates to detect common forms of color vision deficiency (CVD). Results appear instantly in your browser. No account, no email, no upload.
Also try: Ishihara test online, Farnsworth D-15 test, FM-100 hue test, deuteranopia, tritanopia.
Interpret your results · Color blind simulator · Color vision tests for jobs
FAQ
Is there a free color blind test with no signup?
Yes. This 18-plate Ishihara-style colour / color blind test runs in your browser, takes under 2 minutes, and does not require an account or email.
Is this color blindness test accurate?
It is a reliable screening tool for red-green and blue-yellow deficiencies. Screen calibration, lighting, and filters affect results. For a clinical diagnosis, see an optometrist.
Is this the same as an Ishihara test?
Yes. The plates follow Ishihara pseudoisochromatic design—the most widely used online color vision screening format. A dedicated Ishihara URL is also available.
Do I get instant results?
Yes. After 18 plates you see a suggested type (deuteranopia, protanopia, tritanopia, or related patterns) and severity band immediately. Nothing is uploaded.
Can children take this test?
Older children who can read numbers can try it. Results are still screening only. An eye-care professional should confirm any concern, especially for school or licensing.
Is an online color blind test a medical diagnosis?
No. Uncalibrated screens cannot replace a clinic anomaloscope, HRR, or D-15 exam. Use this as a first screen, then follow up if the pattern is abnormal.
What if I need a test for a job or licence?
Occupational colour vision rules vary (aviation, maritime, electrical work). This test cannot certify you will pass a workplace exam. See our jobs guide and consider a Farnsworth D-15 as an extra screen.
Does it work on mobile?
Yes. Use a bright screen, turn off Night Shift / extra dimming, and sit at a normal reading distance. Larger screens are slightly more consistent.