VectorWiki - A huge repository of ~120K brand logos in SVG format for free and quick download.
Color Palette Generator - Enter the URL of an image and find its color palette
Brands of the World - Open source database of brands vector logos
Color Hunt - Curated collection of beautiful colors, updated daily
BonsaiJS - A lightweight graphics library with an intuitive graphics API and an SVG renderer.
Coolors.co - The super fast color schemes generator! Create, save and share perfect palettes in seconds!