def colorspace_prefixed_name(colorspace):
    """
    Returns given *OCIO* colorspace prefixed name with its family name.

    Parameters
    ----------
    colorspace : ColorSpace
        ColorSpace to prefix.

    Returns
    -------
    str or unicode
         Family prefixed *OCIO* colorspace name.
    """
    prefix = colorspace.family.replace('/', ' - ')

    return '%s - %s' % (prefix, colorspace.name)