interface RGB {
    r: number;
    g: number;
    b: number;
}
declare class FastColorGenerator {
    private state;
    /**
     * Creates an instance of FastColorGenerator.
     * @param seed - The seed value for the generator. Defaults to the current timestamp.
     */
    constructor(seed?: number);
    /**
     * Generates the next pseudo-random color state.
     */
    next(): void;
    /**
     * Gets the current color as a hex string (e.g., #rrggbb).
     */
    get hex(): string;
    /**
     * Sets the color using a hex string (e.g., #rrggbb).
     * @param value - The hex color string to set.
     * @throws {Error} - If invalid hex color format was passed.
     */
    set hex(value: string);
    /**
     * Gets the current color as an RGB object.
     */
    get rgb(): RGB;
    /**
     * Sets the color using an RGB object.
     * @param value - The RGB object to set.
     */
    set rgb(value: RGB);
    /**
     * Validates if a color channel value is between 0 and 255.
     * @param value - The channel value to validate.
     * @returns True if the value is valid, false otherwise.
     */
    private isValidChannel;
}

export { type RGB, FastColorGenerator as default };