/**
 * Defines the markup color helper object.
 */
export declare class MarkupColor {
    R: number;
    G: number;
    B: number;
    HEX: string;
    /**
     * Creates an instance of the color.
     *
     * @param r - The `red` component of the color, as a number between 0 and 255.
     * @param g - The `green` component of the color, as a number between 0 and 255.
     * @param b - The `blue` component of the color, as a number between 0 and 255.
     */
    constructor(r: number, g: number, b: number);
    /**
     * Returns the color as a string in hexadecimal color syntax `#RGB` using its primary color components
     * (red, green, blue) written as hexadecimal numbers.
     */
    asHex(): string;
    /**
     * Returns the color as an {r, g, b} object.
     */
    asRGB(): {
        r: number;
        g: number;
        b: number;
    };
    /**
     * Sets the color.
     *
     * @param r - The `red` component of the color, as a number between 0 and 255.
     * @param g - The `green` component of the color, as a number between 0 and 255.
     * @param b - The `blue` component of the color, as a number between 0 and 255.
     */
    setColor(r: number, g: number, b: number): void;
    private rgbToHex;
}