export interface Oklch {
    l: number;
    c: number;
    h: number;
}
export interface Hsv {
    h: number;
    s: number;
    v: number;
}
export declare function hexToRgb(hex: string): [number, number, number];
export declare function rgbToHex(r: number, g: number, b: number): string;
export declare function hexToOklch(hex: string): Oklch;
export declare function oklchToHex({ l, c, h }: Oklch): string;
export declare function hexToHsv(hex: string): Hsv;
export declare function hsvToHex({ h, s, v }: Hsv): string;
export declare function rgbToHex8(r: number, g: number, b: number, a?: number): string;
export declare function hsvToHex8(hsv: Hsv, alpha?: number): string;
/** Serialize an HSV+alpha color to the requested space string. */
export declare function serializeColor(hsv: Hsv, alpha: number, space: 'srgb' | 'oklch'): string;
/** Parse '#rgb' | '#rrggbb' | '#rrggbbaa' | 'oklch(l c h)' | 'oklch(l c h / a)'
   into {hsv, alpha}; null when unparseable. */
export declare function parseColorString(input: string): {
    hsv: Hsv;
    alpha: number;
} | null;
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