ColorRules, is an application that lets you try out, create and save color schemes, each of which consists of a set of five colors and three text colors with contrast ratios.
Touch any color to see color details at the bottom and contrast ratio with white, black and any selected color. Long press any color to select it as contrast color. Swipe left to right to view unto twenty previously selected base color.
Check color schemes in portrait mode with preset nine rules and when ready to save just turn the phone in landscape mode. Click on download icon to save color scheme in photo library. Share you saved scheme photo using message or email.