type MethodType = 'absolute' | 'relative';
export declare function lighten(colorString: string, amount: number | string, method?: MethodType): string;
export declare function darken(colorString: string, amount: number | string, method?: MethodType): string;
export declare function contrast(colorString: string, darkString?: string, lightString?: string, threshold?: number): string;
export declare const red: (colorString: string) => number;
export declare const green: (colorString: string) => number;
export declare const blue: (colorString: string) => number;
export declare const alpha: (colorString: string) => number;
export declare const isValid: (colorString: string) => boolean;
export declare const fade: (colorString: string, alpha: number) => string;
export {};
