/** Quadrilinear (4D linear) interpolation over the CMYK grid. c/m/y/k in 0..100. */
export declare function cmykToSrgb(c: number, m: number, y: number, k: number): [number, number, number];
/**
 * Log (once per distinct profile name per process) when a document's declared CMYKProfile
 * isn't a recognized SWOP alias. Informational only — `cmykToSrgb` always uses the SWOP LUT
 * regardless, since it's still strictly better than the naive formula for any coated-stock
 * CMYK document. Call once per document at the top of the convert pipeline.
 */
export declare function noteDocumentCmykProfile(profileName: string | undefined): void;
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