WebGradients is a free collection of 180 linear gradients that you can use as content backdrops in any part of your website.
Trianglify Generator
The super fast color schemes generator!
Coolest handpicked Gradient Hues for your next super ⚡ amazing stuff
Khroma is the fastest way to discover, search, and save color combos you'll want to use.
Best Flat Colors For UI Design
2017 Grabient by unfold