Digital Artists
110 People Were Shown 120 Colours and Asked Which Looked Unique. The Answer Beats K-Means at Finding a Palette
Pull a palette out of an image with K-means in RGB and you get colours that are arithmetically central and perceptually wrong. This replaces the starting points with 64 colours that people actually distinguish, maps pixels with deltaE 2000 instead of Euclidean RGB distance, and scores closer to what designers chose.