ΔE 19.6, loose: different enough that you should pick on purpose. Magos Purple is noticeably darker, more muted, cooler than Matt Pink. They are different kinds of paint: AMMO by Mig Matt Pink is an ink, glaze or transparent paint and Citadel Magos Purple is a one-coat contrast-style paint, so they won’t behave the same on the model even where the colour is close.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 20). Magos Purple is noticeably darker, more muted, cooler than Matt Pink. They are different kinds of paint.
The same difference applies the other way round: Matt Pink is noticeably lighter, more saturated, 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 Matt Pink on the colour wheel See Magos Purple on the colour wheel
All matches: Matt Pink equivalents · Magos Purple equivalents