ΔE 18.6, loose: different enough that you should pick on purpose. Deep Magenta is a little darker, much more muted than Quinacridone Magenta.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Deep Magenta is a little darker, much more muted than Quinacridone Magenta.
The same difference applies the other way round: Quinacridone Magenta is a little lighter, much more saturated.
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 Quinacridone Magenta on the colour wheel See Deep Magenta on the colour wheel
All matches: Quinacridone Magenta equivalents · Deep Magenta equivalents