import type { RGB, ContrastResult, WCAGLevel } from './types';
export declare function getRelativeLuminance(rgb: RGB): number;
export declare function getContrastRatio(color1: string | RGB, color2: string | RGB): number;
export declare function meetsWCAG(color1: string | RGB, color2: string | RGB, level?: WCAGLevel): boolean;
export declare function analyzeContrast(color1: string | RGB, color2: string | RGB): ContrastResult;
export declare function isLargeText(fontSize: string | number, fontWeight: string | number): boolean;
export declare function getPerceivedBrightness(rgb: RGB): number;
export declare function isLightColor(rgb: RGB): boolean;
export declare function getContrastingColor(background: RGB, preferDark?: boolean): RGB;
export declare function adjustColorForContrast(color: string | RGB, background: string | RGB, targetRatio?: number, preferLighter?: boolean): RGB;
export declare function isReadableOnGlass(textColor: string | RGB, glassColor: RGB, glassOpacity: number, backgroundBehindGlass: RGB, minContrast?: number): boolean;
export declare function batchValidate(pairs: Array<{
    foreground: string | RGB;
    background: string | RGB;
    largeText?: boolean;
}>): Array<{
    contrast: number;
    passes: boolean;
    level: 'AA' | 'AAA' | 'FAIL';
}>;
export declare function simulateColorBlindness(rgb: RGB, type: 'protanopia' | 'deuteranopia' | 'tritanopia'): RGB;
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