Answer: Take the Ishihara-style plates above — your answers are scored locally to indicate which color vision type, if any, you may have.
Eight Ishihara-style plates — can you see the hidden numbers?
🔵 Tap a plate size to begin. Each plate hides a number made of colored dots. Enter the number you see — or "Nothing" if you can't make one out. For screening only — not a diagnosis.
Results depend on your device and environment — run the color blindness test — free online ishihara plates a few times and treat the median as your true figure rather than any single reading.
Enter your values in the input fields and the result updates instantly — no signup or download required. The Color Blindness Test — Free Online Ishihara Plates runs entirely in your browser.
Each plate is a field of randomly sized dots in red, orange, and green families, all matched for brightness. A number is drawn inside the dot field using dots of a slightly shifted hue. People with normal red-green vision can pick out the number; people with protanopia or deuteranopia (the most common color vision deficiencies) struggle to separate the number from the background because their eyes compress those hues together.
Scoring most plates correctly suggests normal red-green color vision. Missing several plates suggests a possible red-green deficiency — roughly 1 in 12 men and 1 in 200 women have one. Many people live with mild color deficiency without ever noticing; it usually affects distinguishing reds/greens/browns, not everyday vision quality.
No. Screen brightness, color settings, and room lighting all affect browser-based plates. Treat this as a quick screen: if you fail several plates — or you've always suspected you see colors differently — an optometrist can run calibrated Ishihara books and anomaloscope tests for a real answer.