Match the target.
Trust your eye.

ToneColorMatching is a free, offline color-matching puzzle. Each level names a shade. You mix Hue, Saturation, and Lightness until your swatch sits as close as possible to the target — scored by DeltaE, the scientific color-difference metric.

Free Puzzle · Casual Ages 4+ iPhone · iOS 15+

Download on the App Store

Home screen with Play, Levels, and Settings

Level 14 mixing a gold target against a green guess

How to mix

01 · Brief

Read the target

Every stage gives a color name and a short hint. Early levels also show the target swatch so you can train your eye.

02 · Mix

Drag three sliders

Hue finds the family (0–360°). Saturation sets intensity (0–100%). Lightness darkens or lifts the shade (0–100%).

03 · Submit

Beat the clock

You have 30 seconds. Tap Submit to see your score, DeltaE, hex values, and stars — then unlock the next level.

HUE

Full HSL mixer

Work in the same three axes designers use. The live hex preview updates as you drag, so you can feel the mix before you commit.

ΔE

DeltaE scoring

Closeness is measured with the CIE color-difference formula. A lower DeltaE means a tighter match, a higher score, and more stars.

Fifty sequential levels

Five themed sets, fifty shades. Progress unlocks one stage at a time. Best scores and total stars stay on your device.

MEM

Memory, not guesswork

Levels 1–5 show the target. 6–10 keep the hint only. From 11 onward you mix from memory — difficulty steps up every ten stages.

OFF

Fully offline studio

No accounts, no ads, no in-app purchases, no tracking. Sound, music, and haptics sit in Settings and stay under your control.

From the mixer

Level 16 mixing a deep navy target with HSL sliders

Level 10 mixing a saffron target with HSL sliders

Success screen showing score, DeltaE, and next-level options

Train your eye on fifty shades.

Free on iPhone. English. Portrait. Built for iOS 15 and later. Plays entirely offline.