import { HslColor } from '../../meta/color';
/**
 * Returns a string value for the color. The returned result is the smallest possible hex notation.
 *
 * @example
 * background: hsl(359, 0.75, 0.4)
 * background: hsl({ hue: 360, saturation: 0.75, lightness: 0.4 })
 */
export declare function hsl(value: HslColor | number, saturation?: number, lightness?: number): string;