def rgb_percent_to_name(rgb_percent_triplet, spec=u'<STR_LIT>'):
return rgb_to_name(<EOL>rgb_percent_to_rgb(<EOL>normalize_percent_triplet(<EOL>rgb_percent_triplet<EOL>)<EOL>),<EOL>spec=spec<EOL>)<EOL>
Convert a 3-tuple of percentages, suitable for use in an ``rgb()``
color triplet, to its corresponding normalized color name, if any
such name exists.

The optional keyword argument ``spec`` determines which
specification's list of color names will be used; valid values are
``html4``, ``css2``, ``css21`` and ``css3``, and the default is
``css3``.

If there is no matching name, ``ValueError`` is raised.