Creating large, harmonious and uniform color palettes can be a challenge. Good intentions and confident plans can be abandoned when things get a little unwieldy. But you can equip yourself with some tools to manage the complexity. With the right techniques, large color palettes can be created, refined and refactored at will. Large color palettes can be tamed.
Creating Color Palettes Using Adjustment Layers Quite a few techniques can be used to create large color palettes from a few base colors.
See the article here: