export declare const Colors: {
    white: number;
    black: number;
    transparentMask: number;
};
export declare const LenraColors: {
    bluePulse: number;
    greenPulse: number;
    yellowPulse: number;
    redPulse: number;
};
/**
 * Calculate the luminance of a given color
 * @param color The color
 * @returns The luminance value between 0 (for black) and 1 (for white)
 */
export declare function luminance(color: number): number;
export declare function betterContrast(color: number, ...comparedColors: number[]): number;
export declare function opacity(color: number, a: number): number;
export declare function fromHex(colorHex: string): number;
export declare function toHex(color: number): string;