def delta_e_cie1976(lab_color_vector, lab_color_matrix):
    """
    Calculates the Delta E (CIE1976) between `lab_color_vector` and all
    colors in `lab_color_matrix`.
    """
    return numpy.sqrt(
        numpy.sum(numpy.power(lab_color_vector - lab_color_matrix, 2), axis=1))
Calculates the Delta E (CIE1976) between `lab_color_vector` and all
    colors in `lab_color_matrix`.