Function hexToRgbArray

packages/colors/src/transformations.ts:262–283

(hex: string)

 * Convert a hex color to an RGB color set.
 */
export function hexToRgbArray(hex: string): RGBColor {
    const originalHex = hex;

    let value = hex.replace('#', '');
    if (hex.length === 3) value = value + value;

    const r = value.substring(0, 2);
    const g = value.substring(2, 4);
    const b = value.substring(4, 6);

    const rgb = [r, g, b].map((channel) => {
        try {
            const channelInt = Number.parseInt(channel, 16);
            if (channelInt < 0 || channelInt > 255) throw new Error();
            return channelInt;
        } catch {
            throw new Error(`Invalid hex color provided: ${originalHex}`);
        }
    });

    return rgb as RGBColor;
}

/**
 * Convert a RGB color set to a hex color.