import type { PlatformConfig, TransformedToken } from 'style-dictionary/types';
/**
 * alpha
 * @description takes a colors string like hex or rgba and returns an rgba color with the specified alpha value
 * @param color color string like a `#334455` or `rgb(255,200,100)`
 * @param desiredAlpha number
 * @returns rgba value
 */
export declare const alpha: (color: string, desiredAlpha: number, token?: TransformedToken, config?: PlatformConfig) => string;