export interface Oklab {
    L: number;
    a: number;
    b: number;
}
export declare function srgbToOklab(c: {
    r: number;
    g: number;
    b: number;
}): Oklab;
export declare function deltaEOk(x: Oklab, y: Oklab): number;
export declare function oklabToLinearSrgb(lab: Oklab): {
    r: number;
    g: number;
    b: number;
};