The color perception game for designers, developers, and anyone who thinks they have a sharp eye. Pick HEX, RGB, HSL — beat the clock.
The app fills your screen with a random color. Your job: figure out what it is — exactly.
Choose HEX, RGB, HSL, or HWB. The mode you're most comfortable with is where you'll compete.
Adjust values using the scroll wheels. The clock is running. Every second counts.
Closer match + faster time = better score. See where you rank against players worldwide.
Six-digit hex codes. The language of CSS. If you've ever typed #FF6B6B from memory, you're home.
Red, Green, Blue. 0–255 per channel. Direct, logical, unforgiving. Perfect for print and screen work.
Hue, Saturation, Lightness. Think in human terms. Easier to reason about, harder to master under pressure.
Hue, Whiteness, Blackness. The newest color space in the CSS spec. For the true color nerds.
Hover to reveal the HEX value. Could you match it without looking?
The game picks any color. No two rounds are the same.
Real-time rankings. See where you stand against thousands of players worldwide. Your rank updates instantly after each game.
Every color you've ever attempted is saved. Review your past games, track improvement, and revisit colors that stumped you.
Accuracy plus speed equals your score. A perfect match in 30 seconds beats an imperfect one in 10. Find your optimal strategy.
HEX, RGB, HSL, and HWB. Master your preferred notation or challenge yourself by switching modes each round.
Your opponent has already chosen. Now it's your turn. Race against others' times and prove you're faster and more accurate.
After dozens of rounds, you'll start to see colors differently. Your eye genuinely improves. Design work will never look the same.
Every game goes on the global board. Your name, your time, your accuracy. Top players are identified as color masters. Are you one of them?
▶ Play NowReady to play?
Free to download. No in-app friction. Just you, a color, and a clock.