export declare const createLinearGradient: (direction: any, ctx: any, width: any, height: number, color1: string, color2: string) => void;
export declare function rgb2hex({ r, g, b }: any, toUpper: boolean): string;
export declare function hex2rgb(hex: any): {
    r: number;
    g: number;
    b: number;
};
export declare function rgb2rgba(rgba: any): any;
export declare function rgb2hsv({ r, g, b }: any): {
    h: number;
    s: number;
    v: number;
};
export declare function getColorValue(color: any): {
    r: any;
    g: any;
    b: any;
    a: any;
    h: number;
    s: number;
    v: number;
};
export declare function createAlphaSquare(size: number): HTMLCanvasElement;