import type { NamedCSSColour, RGBColour } from "./types";
/**
 * Converts a named CSS colour to an RGB colour object.
 *
 * @param {NamedCSSColour} colour - The named CSS colour to convert.
 * @returns {RGBColour | undefined} An RGB colour object representing the named CSS colour, or undefined if the named CSS colour is not recognized.
 */
export declare function convertNamedCSSColourtoRGB(colour: NamedCSSColour): RGBColour | undefined;