ΔE 7.5, close: similar, with a visible difference side by side. Fluor Magenta is more saturated than Volupus Pink. They are different kinds of paint: Citadel Volupus Pink is a one-coat contrast-style paint and Green Stuff World Fluor Magenta is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Fluor Magenta is more saturated than Volupus Pink. They are different kinds of paint.
The same difference applies the other way round: Volupus Pink is 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 Volupus Pink on the colour wheel See Fluor Magenta on the colour wheel
All matches: Volupus Pink equivalents · Fluor Magenta equivalents