export declare type RGBComponent = number;
export declare class RGB {
    readonly red: RGBComponent;
    readonly green: RGBComponent;
    readonly blue: RGBComponent;
    constructor(red: RGBComponent, green: RGBComponent, blue: RGBComponent);
    toCSS(): string;
}
export declare class RGBs {
    static create(red: RGBComponent, green: RGBComponent, blue: RGBComponent): RGB;
}
export declare class RGBA extends RGB {
    readonly red: RGBComponent;
    readonly green: RGBComponent;
    readonly blue: RGBComponent;
    readonly alpha: AlphaChannel;
    constructor(red: RGBComponent, green: RGBComponent, blue: RGBComponent, alpha: AlphaChannel);
    toCSS(): string;
}
export declare class RGBAs {
    static create(red: RGBComponent, green: RGBComponent, blue: RGBComponent, alpha: AlphaChannel): RGBA;
}
export declare type AlphaChannel = number;