export declare function isDarkColor(hex: string): boolean;
export declare function getAccessibleTextColors(backgroundColor: string, contrastLevel?: "AAA" | "AA"): {
    text: string;
    info: string;
    warn: string;
    error: string;
    success: string;
    debug: string;
    number: string;
    string: string;
};
export declare function getWCAGLevel(ratio: number, isLargeText?: boolean): "AAA" | "AA" | "A" | "FAIL";
export declare function getWCAGRecommendations(ratio: number): string[];