Color vision checker
Colorblind Checker
This colorblind checker gives you a quick way to check whether common color vision differences might be affecting how you see reds, greens, blues, and yellows.
Quick Answer
A colorblind checker uses color plates to compare your answers with common normal-vision and color-deficiency patterns. If you miss several plates, it can be a signal to retest carefully or ask an eye care professional for a standardized exam.
At a Glance
- Checks common color vision patterns
- Includes red-green and blue-yellow plates
- Shows results right away
- Useful before a professional exam
Checker setup tips
- 1Avoid night-mode, blue-light filters, or extreme screen brightness while checking.
- 2Do not zoom the plate so far that the dot pattern becomes distorted.
- 3If you wear glasses for screen use, keep them on.
- 4Retake the checker once if your first result is surprising.
Use the Colorblind Checker
Run through the plates below and answer what you see. The checker summarizes whether your answers look typical, possibly color deficient, or inconclusive.
Plate 1 of 20
What number do you see in the circle above?
Test Instructions
- Look at each colored circle
- Enter the number you see (if any)
- Take your time — there's no rush
- Make sure your screen brightness is normal
- Ensure good lighting conditions
Medical Disclaimer: This online test is a screening tool. While it can help identify potential color vision deficiencies, it is not a substitute for professional medical diagnosis. Screen brightness, lighting conditions, and display calibration can affect results.
How to Interpret Results
Online color vision results are most useful when you look at the pattern, not just a single answer.
Typical answers
Your answers line up with the numbers most people with normal color vision see.
Deficiency-like answers
Your answers resemble common red-green or blue-yellow color vision deficiency patterns.
Mixed answers
The checker did not find a clear pattern. Screen settings, lighting, or uncertainty may be involved.
What a colorblind checker can tell you
A checker can flag common color vision deficiency patterns, especially red-green differences. It can also show when the result is unclear because your answers do not strongly match either normal vision or a deficiency pattern.
What a checker cannot prove
A browser-based checker cannot perfectly control your screen colors or room lighting. It also cannot document a medical diagnosis for school, work, driving, aviation, or occupational requirements. Use it as an accessible first step, not a final answer.
Frequently Asked Questions
How accurate is an online colorblind checker?
It can be useful for screening, but accuracy depends on your screen and environment. Clinical tests are more controlled and should be used for formal diagnosis.
What should I do if the checker says possible deficiency?
Retake the test under good conditions. If the result repeats or matters for school, work, or driving, schedule a professional color vision evaluation.
Can this checker test children?
It can be used with help from an adult, but children may need a professional exam if they are too young to read numbers reliably.