  The co-varying physical couplings (CPC) framework states that physical
parameters like the speed of light in vacuum $c$, the Newtonian constant $G$,
and the cosmological constant $\Lambda$ could indeed vary with the spacetime
coordinates $x^{\mu}$. Here, we assume a temporal variation, that is,
$c(t),G(t)$ and $\Lambda(t)$. We show that the McVittie spacetime, a black hole
in an expanding universe, is a solution of the CPC framework providing
naturally an important parameter of the model. Then, we calculate the shadow
angular radius of this black hole at cosmological distances. A black hole
shadow in the CPC context could be either larger or smaller than the same
shadow in the standard cosmology. It depends on how the set $\{ c,G,\Lambda \}$
varies with time or with the cosmic expansion.
