Color Blindness Test
Spot the numbers hidden in the colored dots.
You'll see 7 circles made of colored dots, each hiding a one- or two-digit number. Use a well-lit room, full brightness and turn off night mode or blue-light filters.
For information only — not a diagnosis or medical advice. Nothing you enter is sent or stored.
How to use Color Blindness Test
- Turn screen brightness up, avoid night mode and blue-light filters.
- Click “Start test” and type the number you see in each circle, or choose “I see nothing”.
- See your score and which kinds of plates you missed.
Frequently asked questions
Are these the official test plates?
No. The plates are generated fresh each time on your device using colors that people with red-green or blue-yellow deficiency find hard to tell apart. It's a screening, not a clinical test.
What if I missed the first plate?
The first plate is visible to almost everyone. If you missed it, check your screen settings (night mode, filters, brightness) and try again.
Can this replace a doctor?
No. This tool gives general estimates and self-checks for information only. It does not diagnose anything. Please see a qualified health professional for medical advice, and seek urgent care if you feel unwell.
Is Color Blindness Test free?
Yes. Color Blindness Test is free to use with no sign-up and no watermark.
Is my information saved or sent anywhere?
No. Everything is calculated in your browser. Nothing you enter is sent to a server or stored.
Does it work on my phone?
Yes. It works in any modern browser on Windows, Mac, Linux, Android and iPhone. Very large files may be slow on older phones.