/**
 * Calculate relative luminance.
 *
 * Use relative luminance definition from W3C
 * https://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
 * @param color string any color string
 * @param args object optional arguments: ignoreTransparency (default: false)
 */
declare const getRelativeLuminance: (color: string, { ignoreTransparency }?: {
    ignoreTransparency?: boolean | undefined;
}) => number;
export default getRelativeLuminance;