ImageMagick - ImageMagick is a software suite to create, edit, and compose bitmap images.
Material Palette - Generate and export your Material Design color palette
OpenCV - OpenCV is the world's biggest computer vision library
Color Hunt - Curated collection of beautiful colors, updated daily
Cloudinary - Cloudinary is a cloud-based service for hosting videos and images designed specifically with the needs of web and mobile developers in mind.
Coolors.co - The super fast color schemes generator! Create, save and share perfect palettes in seconds!