ΔE 14.3, fair: the same colour family, but not a straight swap. Volupus Pink is a little lighter, more saturated than Magenta. They are different kinds of paint: AK Interactive Magenta is an opaque base/layer 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.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Volupus Pink is a little lighter, more saturated than Magenta. They are different kinds of paint.
The same difference applies the other way round: Magenta is a little darker, more muted.
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 Magenta on the colour wheel See Volupus Pink on the colour wheel
All matches: Magenta equivalents · Volupus Pink equivalents