export type ColorChannels = {
    r: number;
    g: number;
    b: number;
    a: number;
};
export declare const defaultColor = "#03BCD4";
/**
 * Returns a value between 0 (black) and 1 (white) using the WCAG relative luminance formula
 */
export declare const getLuminance: (hex: string) => number;
export declare const parseColor: (color: string) => {
    r: number;
    g: number;
    b: number;
    a: number;
};
export declare const channelsToHex: ({ r, g, b, a }: ColorChannels, useAlpha: boolean) => string;
export declare const channelsToRgba: ({ r, g, b, a }: ColorChannels, useAlpha: boolean) => string;
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