Send this to a friend to challenge them on the exact same colours
History
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How to play
A colour flashes for a few seconds. Memorise it, then recreate it with the sliders. Five rounds — your score is the average.
The three axes
H — Hue
The colour itself (red, green, blue…)
S — Saturation
How vivid or washed-out
B — Brightness
How light or dark
Scoring
Uses CIEDE2000 — the industry standard for perceptual colour difference.
Each round shows your total score (0–100) plus separate breakdowns for Hue, Chroma and Lightness.
Hue
base colour angle
Chroma
vividness
Lightness
perceived brightness
Difficulty
Easy
4.0 s · lenient scoring
Medium
2.5 s · balanced
Hard
1.5 s · precision required
Daily
hard rules · one attempt per day
Seeds
Every game has a unique seed code. Share it with friends so they can play the exact same colours.