import { type Format } from 'colorjs.io/types/src/space';
import { type ColorTypes } from '../re-exports/colorjs-io.js';
/**
 * Asserts that the given color type is valid.
 *
 * @category Internal
 */
export declare function getAssertedValidColor(input: ColorTypes | undefined): import("colorjs.io/types/index.js").default;
/**
 * The colorjs format for CSS RGB colors.
 *
 * @category Internal
 */
export declare const rgbCssColorFormat: Format;