coolors

WebGradients is a free collection of 180 linear gradients that you can use as content backdrops in any part of your website.

平面UI颜色2-14个调色板，280色

Beautiful colored gradients

Beautiful Color Palettes

Best Flat Colors For UI Design

一键生成颜色组合。Colormind使用深层神经网络创建有凝聚力的颜色方案。