WebGradients is a free collection of 180 linear gradients that you can use as content backdrops in any part of your website.
Trianglify Generator
Best Flat Colors For UI Design
Create color schemes with the color wheel or browse thousands of color combinations from the Color community.
Beautiful Color Palettes
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
Curated gradients for designers and developers
