export interface IReadable {
    aa: boolean;
    aaLarge: boolean;
    aaSmall: boolean;
    aaa: boolean;
    aaaLarge: boolean;
    aaaSmall: boolean;
    cts: string;
    result: 'AAA' | 'AA' | 'Fail';
    shield: string;
}
export declare const readable: (color1: string, color2: string) => IReadable;