/**
 * Converts RGB or RGBA color values to a HEX color string.
 * @param {number} r - The red color value (0-255).
 * @param {number} g - The green color value (0-255).
 * @param {number} b - The blue color value (0-255).
 * @param {number} a - Optional. The alpha value (0-1). If provided, the resulting HEX string will include the alpha channel.
 * @param {boolean} withHashPrefix - Optional. If <c>true</c>, the # (hash) prefix is added to the return value, otherwise not. Default value is true.
 * @return {string}  A string representing the HEX color value. If the alpha value is provided, the string will include the alpha channel.
 * @example
 * ```typescript
 * rgbToHex(255, 0, 0);               // returns "#ff0000"
 * rgbToHex(255, 0, 0, false);        // returns "ff0000"
 * rgbToHex(0, 255, 0, 0.5);          // returns "#00ff007f"
 * rgbToHex(0, 255, 0, 0.5, false);   // returns "00ff007f"
 * ```
 * @since 1.5.0
 */
export default function rgbToHex(r: number, g: number, b: number, a?: number, withHashPrefix?: boolean): string;
//# sourceMappingURL=rgbToHex.d.ts.map