export declare const COLOR_MATCH: {
    CSS_UNIT: RegExp;
    rgb: RegExp;
    rgba: RegExp;
    hsl: RegExp;
    hsla: RegExp;
    hsv: RegExp;
    hsva: RegExp;
    hex3: RegExp;
    hex6: RegExp;
    hex4: RegExp;
    hex8: RegExp;
};
export declare function parseColor(color: string): [number, number, number] | [number, number, number, number] | undefined;
export declare function rgbaArray2HslArray([r, g, b, a]: number[]): number[];
export declare function rgbArray2HsvArray([r, g, b]: number[]): any[];
export declare function hslaArray2RgbaArray([h, s, l, a]: [number, number, number, number?]): number[];
export declare function hslaFormatArray2HslaNumArray([hh, ss, ll, aa]: string[]): number[];
export declare function hslArray2HslFormat(arr: number[]): string;
export declare function rgbaArray2HexFormat([r, g, b, a]: number[]): string;
export declare function rgbaArray2RgbFormat([r, g, b, a]: number[]): string;
export declare function darken(color: string, value: number): string;
export declare function fade(color: any, alpha?: number): string;
export declare function isDark(color: string): boolean;