import * as i0 from "@angular/core";
export declare class ColorContrastDirective {
    private readonly _colorService;
    private readonly _contrastService;
    /**
     * Define the background color for contrast comparison.
     * This can be a CSS color value or the name of a
     * color from the color palette.
     */
    set uxColorContrast(backgroundColor: string);
    /**
     * Define the light color for contrast comparison.
     * This can be a CSS color value or the name of a
     * color from the color palette.
     */
    set lightColor(lightColor: string);
    /**
     * Define the dark color for contrast comparison.
     * This can be a CSS color value or the name of a
     * color from the color palette.
     */
    set darkColor(darkColor: string);
    /** Determine the color to set based on the supplied parameters */
    get _color(): string | null;
    /** Store the background color as a ThemeColor object */
    private _backgroundColor;
    /** Store the light color as a ThemeColor object */
    private _lightColor;
    /** Store the light color as a ThemeColor object */
    private _darkColor;
    static ɵfac: i0.ɵɵFactoryDeclaration<ColorContrastDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<ColorContrastDirective, "[uxColorContrast]", never, { "uxColorContrast": { "alias": "uxColorContrast"; "required": false; }; "lightColor": { "alias": "lightColor"; "required": false; }; "darkColor": { "alias": "darkColor"; "required": false; }; }, {}, never, never, false, never>;
}