def check_color(x):
    """
    Convert atomic number to color: 1-109.

    Parameters
    ----------
    x : int
        Atomic number.

    Returns
    -------
    atomic color[x] : str
        Atomic color.

    References
    ----------
    http://jmol.sourceforge.net/jscolors/

    Examples
    --------
    >>> check_color(2) # He
    '#D9FFFF'

    """
    atom_color = ['0', '#FFFFFF', '#D9FFFF', '#CC80FF', '#C2FF00',
        '#FFB5B5', '#909090', '#3050F8', '#FF0D0D', '#90E050', '#B3E3F5',
        '#AB5CF2', '#8AFF00', '#BFA6A6', '#F0C8A0', '#FF8000', '#FFFF30',
        '#1FF01F', '#80D1E3', '#8F40D4', '#3DFF00', '#E6E6E6', '#BFC2C7',
        '#A6A6AB', '#8A99C7', '#9C7AC7', '#E06633', '#F090A0', '#50D050',
        '#C88033', '#7D80B0', '#C28F8F', '#668F8F', '#BD80E3', '#FFA100',
        '#A62929', '#5CB8D1', '#702EB0', '#00FF00', '#94FFFF', '#94E0E0',
        '#73C2C9', '#54B5B5', '#3B9E9E', '#248F8F', '#0A7D8C', '#006985',
        '#C0C0C0', '#FFD98F', '#A67573', '#668080', '#9E63B5', '#D47A00',
        '#940094', '#429EB0', '#57178F', '#00C900', '#70D4FF', '#FFFFC7',
        '#D9FFC7', '#C7FFC7', '#A3FFC7', '#8FFFC7', '#61FFC7', '#45FFC7',
        '#30FFC7', '#1FFFC7', '#00FF9C', '#00E675', '#00D452', '#00BF38',
        '#00AB24', '#4DC2FF', '#4DA6FF', '#2194D6', '#267DAB', '#266696',
        '#175487', '#D0D0E0', '#FFD123', '#B8B8D0', '#A6544D', '#575961',
        '#9E4FB5', '#AB5C00', '#754F45', '#428296', '#420066', '#007D00',
        '#70ABFA', '#00BAFF', '#00A1FF', '#008FFF', '#0080FF', '#006BFF',
        '#545CF2', '#785CE3', '#8A4FE3', '#A136D4', '#B31FD4', '#B31FBA',
        '#B30DA6', '#BD0D87', '#C70066', '#CC0059', '#D1004F', '#D90045',
        '#E00038', '#E6002E', '#EB0026']
    return atom_color[x]
