import type { ColorFormat } from '../../core/types.js';
/**
 * Set of CSS color names supported by the `color-name` package.
 */
export declare const namedColors: ReadonlySet<string>;
/**
 * Detects the format of a CSS color string.
 *
 * @param value - The color string to examine.
 * @returns The detected color format or `null` if unknown.
 *
 * @example
 * detectColorFormat('#fff'); // => 'hex'
 * detectColorFormat('rgb(0 0 0 / 0.5)'); // => 'rgb'
 */
export declare const detectColorFormat: (value: string) => ColorFormat | null;
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