import type { CSSProperties } from 'react';
type Color = NonNullable<CSSProperties['color']>;
/**
 * Lighten color
 */
export declare const lighten: (color: Color, percentage: number) => string;
/**
 * Darkens color
 */
export declare const darken: (color: Color, percentage: number) => string;
/**
 * Sets opacity on given color
 */
export declare const opacity: (color: Color, alpha: number) => string;
export {};