Site Palette - Get the essential colours from any website
Anima App - Design, get feedback, convert to code, publish, iterate.
Sketch Palettes - Sketch plugin to save and load colors into the color picker
Sketch Repo - Collection of resources for anyone who uses Sketch
AI Colors - Generate unique colour palettes from a text prompt.
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.