/**
 * Contrast and luminance utilities based on WCAG guidelines.
 */
export declare function getLuminance(hex: string): number;
export declare function getContrastRatio(foreground?: string, background?: string): number;
export declare function isAccessible(foreground?: string, background?: string, level?: 'AA' | 'AAA'): boolean;
//# sourceMappingURL=contrast.d.ts.map