export declare function isColorDark(red: number, green: number, blue: number): boolean;
declare const _default: import("@ember/component/helper").FunctionBasedHelper<{
    Args: {
        Positional: [number, number, number];
        Named: import("@ember/component/helper").EmptyObject;
    };
    Return: boolean;
}>;
export default _default;
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