SightGrade

Quick color vision test

Seven hidden-number plates in under a minute: a fast red–green screening, the same idea as the Ishihara plates used at the eye doctor.

How the color vision screening works

Each plate is made of colored dots, and a number is hidden in dots of a slightly different color. People with typical color vision see the number easily. People with red–green color blindness see the two colors as nearly the same, so the number fades into the background.

The first plate is a practice plate that everyone should be able to read. If you miss it, the problem is likely your screen settings, not your eyes.

Screening vs. the full color blindness test

This quick check answers one question: is your red–green color vision typical? If you miss plates, take the full color blindness test, which uses plates designed for each type of color blindness to tell you which type you have (red, green or blue–yellow) and how strong it is.

Frequently asked questions

How accurate is an online color vision test?

Good for screening, not for official certification. Screens differ in color, so a professional test under controlled lighting is needed for jobs such as pilot, electrician or police officer.

Why turn off Night Shift for a color test?

Night Shift, True Tone and blue-light filters shift every color on the screen toward yellow, which can hide or reveal numbers that shouldn't be. Turn them off before testing.

More free eye tests

Vision test (20/20)
Tumbling-E chart for each eye. Measures your 20/20 score.
Contrast sensitivity test
How faint can letters get before they disappear?
Astigmatism test
Do some lines on a clock dial look darker?
Amsler grid test
Check for wavy, blurry or missing areas.
Color blind test
Finds your type (red, green or blue-yellow) and how strong it is.
Reading vision test
Smallest print you can read, plus a reading-glasses suggestion.
Dominant eye test
Which eye does your brain trust for aiming?
Color blindness simulator
See how the world, or your own photo, looks with each type of color blindness.

This is a screening tool, not a diagnosis. If you have sudden vision loss, flashes, a curtain over your vision, eye pain or new double vision, get urgent care now.