What Delta E means
Delta E is a perceptual color distance: lower values mean the target and guess should look closer to human eyes.
Scoring
0 to 10 by perceptual distance
Scoring
The score compares target and guess in a Lab color space, then maps Delta E to a simple 0-10 result.
Why not RGB distance
RGB math treats channels mechanically, but human color perception is uneven. Lab-style distance gives the reveal a fairer feel for hue, intensity, and lightness drift.
How round scores work
Very close guesses stay near 10, medium misses fall into the middle, and large color-family misses drop toward zero.
How total scores work
A full run has five rounds, so the final score is the five round scores added together and shown out of 50.
Hint penalty
Using a pulse hint keeps the game learnable, but subtracts from the round score so leaderboard runs still reward memory.
Leaderboard scores
Leaderboard entries compare completed five-round runs within the same mode: Toon, ColorTone, or FlagTone.