import { ColorRGBA } from "./rgba";
/**
 * Represents a color of color type `ColorType.GRAY_SCALE`.
 *
 * @see ColorType
 */
export declare type ColorGrayScale = [number] & {
    gray: number;
};
/**
 * Create a new color of type `ColorGrayScale`.
 *
 * @param gray The value for the `gray` part of the color.
 *
 * @return The color in gray scale representation.
 */
export declare function colorGrayScale(gray: number): ColorGrayScale;
/**
 * Checks if the given parameter is a color of type `ColorGrayScale`.
 *
 * @param color The input to check.
 *
 * @return `true` if `color` was of type `ColorGrayScale` and `false` otherwise.
 */
export declare function isColorGrayScale(color: any): color is ColorGrayScale;
/**
 * Converts a color of type `ColorGrayScale` to `ColorRGBA`.
 *
 * @param color The color to convert.
 *
 * @return The converted color in rgba format.
 */
export declare function convertGrayScaleToRGBA(grayScaleAlpha: ColorGrayScale): ColorRGBA;