export type ColorFormat = 'rgb' | 'rgba' | 'hsl' | 'hsla';
export interface ColorObject {
  type: ColorFormat;
  values: [number, number, number] | [number, number, number, number];
}

export function hexToRgb(hex: string): string;
export function rgbToHex(color: string): string;
export function hslToRgb(color: string): string;
export function decomposeColor(color: string): ColorObject;
export function recomposeColor(color: ColorObject): string;
export function getContrastRatio(foreground: string, background: string): number;
export function getLuminance(color: string): number;
export function emphasize(color: string, coefficient?: number): string;
/**
 * @deprecated
 * Use `import { alpha } from '@material-ui/core/styles'` instead.
 */
export function fade(color: string, value: number): string;
export function alpha(color: string, value: number): string;
export function darken(color: string, coefficient: number): string;
export function lighten(color: string, coefficient: number): string;