What is it?
The Colour Vision Test shows eight dot plates with hidden numbers, like the Ishihara test. Type the Number you see or tap I see no number; the result suggests whether you may see colours differently.
Who is it for?
People curious about their colour vision, parents of children who mix up colours, and students considering careers where colour vision matters.
How to use it
- Turn screen brightness up and sit at arm’s length.
- For each Plate, type the number or tap I see no number, then Next.
- Read your result; Start again to repeat.
Good to know
About 1 in 12 men and 1 in 200 women have red-green colour vision deficiency. It’s usually inherited and harmless, but some jobs (pilots, railway drivers, electricians, some defence roles) require normal colour vision; a formal Ishihara test by an eye doctor decides.
Not a medical test. It’s a quick screening aid; see an optometrist, audiologist or doctor for a proper check, especially if you notice changes.
Errors and how to fix them
- Results vary between screens: screen colour settings, night mode and blue-light filters change colours; turn them off.
- Unsure on a plate: answer what you see; guessing doesn’t help.
Questions people ask
- Can children take it? Yes, if they can read numbers.
Practical tip
Take the test in daylight or bright, neutral light, with night mode and blue-light filters off; tinted light changes how the dots look.
Open the tool: Colour Vision Test
Still stuck?
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Questions, or an error not listed here?
Tell us in the comments: what you were doing, the exact message you saw, and your device and browser. We read every comment and add new fixes to this article.