Huesort
Tap two tiles to swap them. Sort the shades into a smooth gradient. The locked ends can't move.
About Huesort — order shades into a smooth gradient
Huesort trains gradient ordering — arranging a scramble of shades into one smoothly graduated run. To sort them you must compare each tile against both neighbours and judge tiny steps in hue or lightness, the same fine-ranking skill behind laying out a tonal palette, ordering paint samples from light to dark, or spotting where a gradient stops being even.
Tap two tiles to swap them and keep rearranging until the row climbs in a seamless gradient. The two end tiles are locked, so you sort everything in between to bridge them cleanly into one even climb.
Ranking shades this way exercises your feel for ordered steps in hue, saturation and lightness. See that guide, or browse all our Learn about color articles.