export declare namespace ColorTools {
    /**packs color in binary form 32bit */
    function PackColor(r: number, g: number, b: number, a: number): number;
    /**packs color in binary form 32bit */
    function PackColor3(color: Color3): number;
    /**unpacks color from binary*/
    function UnpackColor3(packed_color: number): Color3;
    /**unpacks color from binary*/
    function UnpackColor(packed_color: number): LuaTuple<[number, number, number, number]>;
    function GetRelativeLuminance(color: Color3): number;
    function CalculateContrastRatio(color_1: Color3, color_2: Color3): number;
    /**
     * @returns if the colors luminance if greater than .6
     */
    function IsBright(color: Color3): boolean;
    /**
     * @returns black or white
     */
    function GetSimpleContrastColor(color: Color3): Color3;
    /**
     * @returns contrast rgb color
     */
    function GetContrastColor(color: Color3): Color3;
    /**
     * @link https://www.rapidtables.com/convert/color/rgb-to-hsv.html
     *
     * */
    function RGBToHSV(r: number, g: number, b: number): LuaTuple<[number, number, number]>;
    /**
     * @link https://www.rapidtables.com/convert/color/hsv-to-rgb.html
     *
     * */
    function HSVToRGB(h: number, s: number, v: number): LuaTuple<[number, number, number]>;
    /**
     * @see https://github.com/littensy/rbxts-react-example/blob/main/src/client/utils/color-utils.ts
     * @param color The color to brighten or darken
     * @param brightness The amount to brighten or darken the color
     * @param vibrancy How much saturation changes with brightness
     */
    function Brighten(color: Color3, brightness: number, vibrancy?: number): Color3;
    /**
     * @see https://github.com/littensy/rbxts-react-example/blob/main/src/client/utils/color-utils.ts
     * @param color The color to saturate or desaturate
     * @param saturation How much to add or remove from the color's saturation
     */
    function Saturate(color: Color3, saturation: number): Color3;
}