Colormind - Color scheme generator that uses deep learning. pastel - Command-line tool to generate, analyze, convert and manipulate colors. Contrast - MacOS app for quick access to WCAG color contrast ratios. Sip - Better way to collect, organize & share your colors. Happy Hues - Color palette inspiration site that acts as a real world example as to how the colors could be used in your design projects. Pywal - Tool that generates a color palette from the dominant colors in an image. Duo - Collection of color combinations that I've curated from personal projects or that I've come across on the web. (HN) Themer - Takes a set of colors and generates themes for your development environment (editors, terminals, wallpapers, and more). (Code) Color Names - Collaborative effort to name every color in the RGB/web space. (HN) Chromotome - Collection of color palettes saved for personal use. (Code) Scale - Generative way to create color scales. (Code) Piggment - The gradient you have always wanted. Coolors - Super fast color schemes generator. atcq - Implementation of Ant-Tree Color Quantization (ATCQ), described by Pérez-Delgado in various papers. iroiro - Beautiful Colors Lookup in CLI. Cascading Colors - Generate dynamic and themable color palettes using CSS custom properties, and allow (persistent) user-adjustments with a bit of light-weight JS. (Code)