The daily color digest

提供渐变色和配色方案，还能从提供的图片中提取主要配色

Copy Paste Color Pallette from Flat UI Theme

RGB颜色值与十六进制颜色码转换工具，能将RGB颜色值与十六进制颜色码相互转换

Beautiful colored gradients

Khroma is the fastest way to discover, search, and save color combos you'll want to use.