ΔE 27.4, loose: different enough that you should pick on purpose. Volupus Pink is a little darker, cooler than Fluorescent Magenta. They are different kinds of paint: AK Interactive Fluorescent Magenta is a fluorescent or effect paint and Citadel Volupus Pink 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 27). Volupus Pink is a little darker, cooler than Fluorescent Magenta. They are different kinds of paint.
The same difference applies the other way round: Fluorescent Magenta is a little lighter, 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 Fluorescent Magenta on the colour wheel See Volupus Pink on the colour wheel
All matches: Fluorescent Magenta equivalents · Volupus Pink equivalents