export declare function readable(color: string): "#000" | "#fff";
export declare function highlight(color: string, amount: number): string;
export declare function lighten(color: string, amount: number): string;
export declare function darken(color: string, amount: number): string;
export declare function transparentize(color: string, amount: number): string;
export declare function transparentizeReadable(color: string, amount: number): string;
export declare function toRgb(color: string): number[];