  The recent measurement by the CDF Collaboration of the $W$ boson mass is in
significant tension with the Standard Model expectation, showing a discrepancy
of seven standard deviations. A larger value of $m_W$ affects the global
electroweak fit, particularly the best-fit values of the Peskin-Takeuchi
parameters $S$, $T$ (and perhaps $U$) that measure oblique corrections from new
physics. To meet this challenge, we propose some simple models capable of
generating non-negative $S$ and $T$, the latter of which faces the greatest
upward pressure from the CDF measurement in scenarios with $U=0$. Our models
feature weak multiplets of scalars charged under $\mathrm{SU}(3)_{\text{c}}
\times \mathrm{U}(1)_Y$, which cannot attain nonzero vacuum expectation values
but nevertheless produce e.g. $T \neq 0$ given some other mechanism to split
the electrically charged and neutral scalars. We compute the oblique
corrections in these models and identify ample parameter space supporting the
CDF value of $m_W$.
