export interface AppearanceInterface {
    primaryColor?: string;
    primaryContrast?: string;
    secondaryColor?: string;
    secondaryContrast?: string;
    logoLight?: string;
    logoDark?: string;
    favicon_400x400?: string;
    favicon_16x16?: string;
}
export declare class AppearanceHelper {
    static getLogoDark(appearanceSettings: AppearanceInterface, defaultLogo: string): string;
    static getLogoLight(appearanceSettings: AppearanceInterface, defaultLogo: string): string;
    static getFavicon(appearanceSettings: AppearanceInterface, size: "400" | "16"): string;
    static getLogo(appearanceSettings: AppearanceInterface, defaultLogoLight: string, defaultLogoDark: string, backgroundColor: string): string;
    private static isDark;
    private static getHexValue;
}
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