export declare const getInitialsFromText: (text: string) => string;
export declare const isValidImageUrl: (url: string) => Promise<boolean>;
export declare const hexToRgb: (hex: string) => {
    r: number;
    g: number;
    b: number;
} | null;
/**
 * Get a consistent color for an avatar based on the full name/text
 * Uses hash of the entire text to ensure unique colors for different names
 * @param text - The text to generate color from (e.g., name or alt text)
 * @returns A hex color code that provides sufficient contrast with white text (#FFFFFF)
 */
export declare const getColorFromText: (text: string) => string;