import { Tints } from './types';
/**
 * @internal
 */
export declare function _buildTints(bg: string, mid: string, fg: string): Tints;
/**
 * @internal
 */
export declare function _toHex(color: string): string;
/**
 * @internal
 */
export declare function _isDark(bg: string, fg: string): boolean;
/**
 * Blend two colors using the "screen" blend mode
 * @internal
 */
export declare function _multiply(bg: string, fg: string): string;
/**
 * Blend two colors using the "screen" blend mode
 * @internal
 */
export declare function _screen(bg: string, fg: string): string;
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