/**
 * Calculates the CSS representation of the given CIE 1931 XYZ color.
 * **The alpha component will be clamped to [0, 1] before processing.**
 *
 * @param x The X component of CIE 1931 XYZ.
 * @param y The Y component of CIE 1931 XYZ.
 * @param z The Z component of CIE 1931 XYZ.
 * @param withAlpha The alpha component of the color, range [0, 1], defaults to 1.
 *
 * @returns The CSS representation of the color.
 */
export declare const toCSSFromCIE1931XYZ: (x: number, y: number, z: number, withAlpha?: number) => string;
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