Best Flat Colors For UI Design
WebGradients is a free collection of 180 linear gradients that you can use as content backdrops in any part of your website.
2017 Grabient by unfold
Khroma is the fastest way to discover, search, and save color combos you'll want to use.
The daily color digest
Copy Paste Color Pallette from Flat UI Theme
Curated gradients for designers and developers