  We study the complementarity between quark and lepton mixing angles (QLC),
the sum of an angle in quark mixing and the corresponding angle in lepton
mixing is $\pi/4$. Experimentally in the standard PDG parametrization, two such
relations exist approximately. These QLC relations are accidental which only
manifest themselves in the PDG parametrization. We propose reparametrization
invariant expressions for the complementarity relations in terms of the
magnitude of the elements in the quark and lepton mixing matrices. In the exact
QLC limit, it is found that $|V_{us}/V_{ud}| + |V_{e2}/V_{e1}| +
|V_{us}/V_{ud}| |V_{e2}/V_{e1}| =1$ and $|V_{cb}/V_{tb}| + |V_{\mu 3}/V_{\tau
3}| +|V_{cb}/V_{tb}|| {V_{\mu 3}}/V_{\tau 3}| =1$. Expressions with deviations
from exact complementarity are obtained. Implications of these relations are
also discussed.
