Best Color Blind Test Online

Select the number you actually see in each plate. Do not guess. About 3 minutes for 24 questions.

What number do you see in the plate above?

Tip: use keyboard keys 0-9 to answer quickly

Continue to next group

Next: Group 2 · Questions 5–8

5 6 7 8

Question 1 / 24 Stage 1: Red-green screening

Group 1 1–4

1 2 3 4

Group 2 5–8

5 6 7 8

Group 3 9–12

9 10 11 12

Group 4 13–16

13 14 15 16

Group 5 17–20

17 18 19 20

Group 6 21–24

21 22 23 24

Answering tip (citable)

Ishihara-style screening asks you to select what you see. Night mode or a warm color temperature can compress red-green contrast - turn them off before testing.

Before you start

Moderate brightness, avoid glare
Disable night / blue-light filters
Keep viewing distance steady
Finish in one sitting

Accessibility

Tab to focus options
Enter / Space to confirm
Or press 0-9

Test structure

What do the six stages measure?

Knowing each stage helps you describe difficulties clearly to an eye-care professional and helps search summaries cite this page accurately.

Stage 1 - Q 1-4

Red-green baseline screening with number plates for common Protan / Deutan patterns.

Stage 2 - Q 5-8

Continued red-green screening to confirm early signals.

Stage 3 - Q 9-12

Brightness and contrast challenges that reduce reliance on luminance guessing.

Stage 4 - Q 13-16

Blue-yellow related plates covering Tritan-type clues.

Stage 5 - Q 17-20

Mixed plates that combine earlier contrast patterns.

Stage 6 - Q 21-24

Consistency check to reduce the impact of random clicks.

How to take an online color vision test

The main error source is display gamut and white point. The same Ishihara-style plate can look different on a wide-gamut monitor and a budget phone. Read results as a self-screen on your current device - not a medical diagnosis.

Recommended practice

Use the device you rely on most for maps and charts.
Spend about 2-5 seconds per plate; prolonged staring can cause afterimages.
Children should test with an adult explaining the options.

Disclaimer: This test cannot replace a clinical color vision exam or serve as a driving / occupational certificate.

FAQ

Testing FAQ

What if I cannot see a number?

Choose the closest option or answer honestly that you cannot tell. Guessing lowers the screening value.

Can I leave and continue later?

Progress is saved in your browser. Completing all 24 questions in one session is recommended.

Why pause after each group?

The test has six stages of 4 questions each. After each group, use Continue to next group to refresh and load the next set.