Odd Color Out - Color Discrimination Game
Spot the one different tile
About this test
Odd Color Out is a color-discrimination game where you spot the one tile that looks slightly different in a grid of same-colored squares. Each round the grid grows and the color gap shrinks, so it gets harder fast.
The rules are simple: the screen fills with same-colored tiles, but exactly one differs slightly in lightness. Tap it before the timer runs out to advance — the grid grows from 2×2 up to 6×6 and the gap gets finer. One wrong tap or a timeout ends the game, and the number of rounds cleared is your score.
This is not a medical color-blindness test, just a fun brain-and-observation game for how well you tell apart tiny shade differences. For an actual diagnosis, take an Ishihara test at an eye clinic.
Results vary with screen brightness, blue-light filters, ambient light, and monitor type, so compare in the same setup. Your cleared rounds register anonymously on a global ranking, and you can share the result card to see whose eyes are sharper.
What you'll learn
- Rounds cleared and a discrimination tier
- Anonymous global ranking
- Shareable result card
How it works
- 1Find and tap the one differently colored tile.
- 2Clear it to advance — the grid grows and the gap shrinks.
- 3A wrong tap or timeout ends it; rounds cleared is your score.
FAQ
QIs this a color-blindness test?
No. It’s a fun discrimination game, not a medical diagnosis. For an actual color-vision exam, take an Ishihara test at an eye clinic.
QHow is the score calculated?
Your score is the number of rounds cleared. Each round the grid grows (up to 6×6), the lightness gap shrinks, and the timer tightens.
QDo results vary by screen?
Yes. Monitor brightness, blue-light filters, and ambient light change how subtle differences appear. Compare in the same setup.
QIs it free?
Yes — free, no sign-up. Only the score submission leaves your browser.
