export declare function isValidRGB(color: number): boolean;
export declare function toHexString(color: number): string;
export declare function toArray(rgb: number, opacity?: number): [number, number, number, number];
export declare function toFloat32Array(rgb: number, opacity?: number): Float32Array;
export declare function setFloat32Array(out: Float32Array, rgb: number, opacity?: number): void;
export declare function setArray(out: [number, number, number, number], rgb: number, opacity?: number): void;