ΔE 28.3, loose: different enough that you should pick on purpose. Magenta is noticeably darker, much more muted, warmer than Medium Magenta.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 28). Magenta is noticeably darker, much more muted, warmer than Medium Magenta.
The same difference applies the other way round: Medium Magenta is noticeably lighter, much more saturated, cooler.
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 Medium Magenta on the colour wheel See Magenta on the colour wheel
All matches: Medium Magenta equivalents · Magenta equivalents