import type { RGBColor, HSVColor, HSLColor } from "../types";
/**
 * Convert hex color to RGB (supports both 6-digit #RRGGBB and 8-digit #RRGGBBAA formats)
 */
export declare function hexToRgb(hex: string): RGBColor | null;
/**
 * Convert RGB color to hex (6-digit format)
 */
export declare function rgbToHex(r: number, g: number, b: number): string;
/**
 * Convert RGB color with alpha to hex (8-digit format #RRGGBBAA)
 */
export declare function rgbToHexAlpha(r: number, g: number, b: number, a: number): string;
/**
 * Convert RGB to HSV
 */
export declare function rgbToHsv(r: number, g: number, b: number): HSVColor;
/**
 * Convert HSV to RGB
 */
export declare function hsvToRgb(h: number, s: number, v: number): RGBColor;
/**
 * Convert RGB to HSL
 */
export declare function rgbToHsl(r: number, g: number, b: number): HSLColor;
/**
 * Convert HSL to RGB
 */
export declare function hslToRgb(h: number, s: number, l: number): RGBColor;
/**
 * Parse color string to RGB
 */
export declare function parseColorString(color: string): RGBColor | null;
/**
 * Convert RGB color to CSS string
 */
export declare function rgbToCssString(color: RGBColor): string;
/**
 * Get contrasting text color (black or white) for a given background color
 */
export declare function getContrastColor(color: RGBColor): string;