Delta E is a distance, not a score

I run a game where you get a brand name — Spotify, IKEA, Home Depot — and rebuild its primary color from memory with three sliders: hue, saturation, lightness. On submit, the guess and the target both go to CIE Lab and the score comes from the distance between them. The scoring line was this: const score = Math.max(0, 100 - deltaE * 2); It looks...