import type { A11yColor } from '../type/types';
/**
 * compute the resulting color of hexA over hexB. If hexB has transparency, computes it over a white background
 * @param hexA
 * @param hexB
 * @returns
 */
export declare const mix: (hexA: string, hexB?: string) => string;
export declare const getContrast: (a11yColor: A11yColor, hex: string | undefined) => {
    trueColors: {
        textColor: string;
        bgColor: string;
    };
    contrast: number;
    placeholder?: string | undefined;
    size?: "normal" | "large" | undefined;
    textHex: string;
    bgHex?: string | undefined;
    reverse: true;
} | {
    trueColors: {
        textColor: string;
        bgColor: string;
    };
    contrast: number;
    placeholder?: string | undefined;
    size?: "normal" | "large" | undefined;
    bgHex?: string | undefined;
    reverse?: false | undefined;
} | undefined;