/** §8.6.5.6/§8.6.5.7 — what a CIE-based space states about itself. */
export interface CieSpace {
    /** `/WhitePoint` — the colour of the illuminant, in XYZ. */
    readonly white: readonly [number, number, number];
    /** `/Gamma` — one per component. */
    readonly gamma: ReadonlyArray<number>;
    /** §8.6.5.7 `/Matrix` — components to XYZ, column-major as the PDF states it. */
    readonly matrix?: ReadonlyArray<number>;
}
/**
 * One colour in a CIE-based space, as sRGB in 0..1.
 *
 * @param space The space's own parameters.
 * @param abc   Its components: one for a grey space, three for an RGB one.
 * @returns The sRGB triple a viewer shows for it.
 */
export declare function cieToSrgb(space: CieSpace, abc: ReadonlyArray<number>): [number, number, number];
/**
 * §8.6.5.8 — one colour in a `Lab` space, as sRGB in 0..1.
 *
 * Lab is the one CIE space a file states in absolute terms: `L*` from 0 to 100
 * is lightness and `a*`/`b*` are the two opponent axes, and unlike `CalRGB`
 * (see the note above) there is no argument about the way out — every renderer
 * takes it through XYZ against the stated white and adapts to the screen's.
 * issue10339_reduced.pdf paints two grids of blue swatches through an `Indexed`
 * palette whose base is one, and read as anything else the page came back
 * blank.
 *
 * @param white The space's `/WhitePoint`, in XYZ.
 * @param lab   `L*`, `a*`, `b*`.
 * @returns The sRGB triple a viewer shows for it.
 */
export declare function labToSrgb(white: readonly [number, number, number], lab: readonly [number, number, number]): [number, number, number];