ΔE 27.2, loose: different enough that you should pick on purpose. Phantom Violet is much more saturated, cooler than Moldy Wine.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 27). Phantom Violet is much more saturated, cooler than Moldy Wine.
The same difference applies the other way round: Moldy Wine is much more muted, warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Moldy Wine on the colour wheel See Phantom Violet on the colour wheel
All matches: Moldy Wine equivalents · Phantom Violet equivalents