Hex Guess
Match the swatch.
Choose Basic for RGB sliders or Advanced for manual hex entry, then guess five colors as accurately and quickly as you can.
How to play
Goal
Look at the target color and create the closest match you can. A game has 5 rounds. The timer only tracks the current guess.
Basic mode
Use the RR, GG, and BB sliders. Each slider runs from 0 to 255, updates its displayed hex pair, and changes color as you drag it.
Advanced mode
Type all 6 hex digits manually. The first pair controls red, the second pair controls green, and the last pair controls blue.
Scoring
Each hex pair receives a 0-100 closeness score. A perfect pair scores 100; the opposite pair, such as 00 guessed as FF, scores 0. Because pairs are scored as 0-255 channel values, the first digit in each pair matters 16 times more than the second. Your round also shows a match percentage and a 0-100 score that factors in both accuracy and time.