Adobe Color CC - Generates color themes that can inspire any project.
Colormind.io - A color palette generator powered by deep learning.
Paletton - Color Scheme Designer
Colllor - With Colllor it is much easier to generate a consistent color palette with just a few clicks.
Color Hunt - Curated collection of beautiful colors, updated daily
Color Palette Generator - Enter the URL of an image and find its color palette