def rgb_to_hex(rgb=(255, 255, 255)):
    """Converts RGB to hex color. In RGB color R stands for Red, G stands for Green, and B stands for Blue, and it ranges from the decimal value of 0 – 255.

    Args:
        rgb (tuple, optional): RGB color code as a tuple of (red, green, blue). Defaults to (255, 255, 255).

    Returns:
        str: hex color code
    """
    return "%02x%02x%02x" % rgb