Ishihara-style Colour Vision Check

Take a quick two-round colour vision check. First, standard Ishihara-style plates. Then, try same challenge with a filter applied.

Type the characters you see, then press Enter to move on. Some plates contain 2–3 characters.

This is not a medical diagnosis.

Round 1 of 2

Plate 1 of 25

Type the number or letters you can see on the plate, then press Enter to move on.

Preparing plates

Generating your plates for this round. Please wait.

0/25 generated

Photosensitivity Warning

This test may include rapidly changing colours, flashing patterns, or high-contrast visual effects. Such stimuli can trigger seizures or discomfort in individuals with photosensitive epilepsy or related conditions.

If you have a history of seizures, migraines triggered by visual patterns, or visual sensitivity, do not proceed or use caution. You may stop the test at any time.

Round two will automatically apply a random filter if you continue.

Quick survey

Please submit this survey to view your results. It helps improve the null band filter.

Questions completed: 0/0

Have you ever been diagnosed with colourblindness before?

The effect in round 2 was distracting / annoying.

It was comfortable to look at.

Caused strain/dizziness.

Device type

Screen Brightness

Free comment

RESULTS

Predicted type (round 1)

Analysing…

Round 1

0%

0/0 correct

Round 2

0%

0/0 correct

This is not a diagnosis.