/**
 * Color helpers for the color picker.
 *
 * culori performs every color-space conversion and string parse. The functions
 * here are thin adapters that translate between culori's normalized shape
 * (`{ mode, r/g/b: 0–1, alpha: 0–1 }`) and the integer/percentage shape the UI
 * works in (`ColorValue` with 0–255 channels, HSL/HSV in degrees/percent), plus
 * rounding and null-hue handling for greys.
 */
export declare const colorFormats: readonly ["hex", "rgb", "hsl", "hsb"];
export type ColorFormat = (typeof colorFormats)[number];
export interface ColorValue {
    r: number;
    g: number;
    b: number;
    a: number;
}
export interface HSVColorValue {
    h: number;
    s: number;
    v: number;
    a: number;
}
export declare function hexToRgb(hex: string, alpha?: number): ColorValue;
export declare function isColorEqual(a: ColorValue, b: ColorValue): boolean;
export declare function isHsvEqual(a: HSVColorValue, b: HSVColorValue): boolean;
export declare function rgbToHex(color: ColorValue): string;
export declare function rgbToHsv(color: ColorValue, fallbackHue?: number): HSVColorValue;
export declare function hsvToRgb(hsv: HSVColorValue): ColorValue;
export declare function rgbToHsl(color: ColorValue): {
    h: number;
    s: number;
    l: number;
};
export declare function hslToRgb(hsl: {
    h: number;
    s: number;
    l: number;
}, alpha?: number): ColorValue;
export declare function colorToString(color: ColorValue, format?: ColorFormat): string;
export declare function parseColorString(value: string): ColorValue | null;
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