ΔE 10.9, fair: the same colour family, but not a straight swap. Medium Magenta is cooler than Volupus Pink. They are different kinds of paint: Citadel Volupus Pink is a one-coat contrast-style paint and Golden Medium Magenta is an opaque base/layer 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 11). Medium Magenta is cooler than Volupus Pink. They are different kinds of paint.
The same difference applies the other way round: Volupus Pink is 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 Volupus Pink on the colour wheel See Medium Magenta on the colour wheel
All matches: Volupus Pink equivalents · Medium Magenta equivalents