IshiharaTest.com is a free online color blindness test based on the classic Ishihara plate method, available in 13 languages. Check your color vision in about 2 minutes, get an instant result with a severity level, and download a PDF report. No sign-up, no email, fully private.
Already run 250-300 times a day by people around the world.
What makes it different:
Every test is unique. The plates are generated algorithmically, so you never get the same fixed set twice. Most online tests reuse the same static images, which are easy to memorize or look up, and that weakens the result.
Two modes. "For Fun" shows four answer choices for a quick, relaxed check. "Screening" hides all hints, so you type the number you see with a time limit per plate, for a more reliable result.
What you get:
Classic Ishihara-style plates, red-green screening
Instant result with a severity level
Downloadable PDF report
13 languages
No account, no email, no tracking
A plain-language guide to the types of color vision deficiency
It is a screening tool, not a medical diagnosis.
Ideal for anyone curious about their color vision, designers, and professionals in color-sensitive fields who want a quick, private check.
For companies there is also a paid professional version, IshiharaPro (https://www.ishiharapro.com/), which screens candidates or staff in about 3 minutes and produces an audit-trailed PDF report.
