ΔE 26.0, loose: different enough that you should pick on purpose. Volupus Pink is noticeably darker, much more saturated, cooler than Intense Pink. They are different kinds of paint: AK Interactive Intense Pink 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.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 26). Volupus Pink is noticeably darker, much more saturated, cooler than Intense Pink. They are different kinds of paint.
The same difference applies the other way round: Intense Pink is noticeably lighter, much more muted, 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 Intense Pink on the colour wheel See Volupus Pink on the colour wheel
All matches: Intense Pink equivalents · Volupus Pink equivalents