/** Extract { r, g, b } (0–255) from a hex string or RGBA-like object. */
export declare function rgb(raw: unknown): {
    r: number;
    g: number;
    b: number;
} | null;
/** HSL saturation of an RGB color (0–1). */
export declare function saturation(r: number, g: number, b: number): number;
/**
 * If the colour's saturation exceeds `maxSat`, pull it toward grey
 * until saturation drops to maxSat.  Returns a hex string.
 */
export declare function desaturateTo(raw: unknown, maxSat: number, fallback: string): string;
/** Darken a hex colour by multiplying each channel by `factor` (0–1). */
export declare function dimColor(hex: string, factor?: number): string;
export declare const FALLBACK: {
    readonly primary: "#8B9DAF";
    readonly text: "#C5C5BB";
    readonly muted: "#7A7A72";
    readonly success: "#9CAF8B";
    readonly warning: "#C5B88D";
    readonly error: "#B08A8A";
    readonly border: "#6B6B63";
};
/**
 * Desaturation ceiling for the Morandi-style palette.
 *
 * Morandi colours float around 0.15–0.30 saturation in HSL space.
 * 0.28 sits near the upper end of that range: it strips the aggressive
 * punch from high-saturation themes (Dracula, Solarized …) while
 * preserving enough colour identity that green / orange / red hit-rate
 * coding stays distinguishable.
 *
 * Lower → more grey, harder to tell colours apart.
 * Higher → bright themes bleed through and defeat the muted look.
 */
export declare const MAX_SAT = 0.28;