Beautiful colored gradients
Trianglify Generator
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
WebGradients is a free collection of 180 linear gradients that you can use as content backdrops in any part of your website.
Curated gradients for designers and developers
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
Copy Paste Color Pallette from Flat UI Theme
