  't Hooft anomaly matching is powerful for constraining the low energy phases
of gauge theories. In 3d one common anomaly is the parity anomaly in a
$T$-symmetric theory where one cannot gauge the global symmetry group without
breaking the time-reversal symmetry. We find that a $T$-symmetric
$\text{SU}(N)$ gauge theory with either fermionic or bosonic matter in the
fundamental representation of the gauge group has a parity anomaly between the
flavor group and $T$-symmetry provided that there is also a massless Majorana
fermion in the adjoint representation of the gauge group. We then analyze the
parity anomaly in this theory, together with the more recent mod 16
time-reversal anomaly, and give some free fermion proposals as candidates for
the low energy phases consistent with the anomalies. We make brief comments
about the large $N$ limit and the $\T$-broken regimes in the conclusion as well
as related anomalies in 4d. }
