Is this a medical diagnosis?

No. This is an informal screening tool inspired by Ishihara plates. Only a qualified eye care professional can diagnose color vision deficiency — please consult one for an official assessment.

How are the plates generated?

Each plate is drawn on an HTML canvas: a hidden mask defines the digit shape, then ~1,200 colored dots are placed in non-overlapping positions, with foreground dots using one hue and background dots another. Slight jitter is added for an authentic look.

What do my results mean?

A perfect or near-perfect score suggests normal color vision. Lower scores may indicate red-green deficiency (the most common type). Tritan (blue-yellow) deficiency is rare and harder to detect with this style of plate.

Does the screen matter?

Yes — color accuracy depends on your display. Calibrated monitors give the most reliable results. Avoid taking the test in direct sunlight or with a screen filter active.

Why are the dots different sizes?

Variable dot sizes and the slight hue jitter make the digit harder to read by shape alone — you need actual color discrimination to pick out the foreground from the background.

Color Vision Test

Ishihara-style plates drawn on canvas — see if your color vision is normal.

100% private — no uploads Free & unlimited Read tutorial

How to use Color Vision Test

Follow these steps — everything happens instantly in your browser.

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Step 1. Look at the round plate — it's filled with colored dots forming a number.
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Step 2. Click the button matching the number you see (or “Nothing” if you can't see one).
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Step 3. Progress through 8 plates, each with different hue combinations.
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Step 4. At the end, see your score and a non-medical indication of possible color vision deficiency.