ΔE 11.7, fair: the same colour family, but not a straight swap. Clear Magenta is a little darker, more saturated than Volupus Pink. They are different kinds of paint: Citadel Volupus Pink is a one-coat contrast-style paint and Reaper Clear Magenta is an ink, glaze or transparent 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 12). Clear Magenta is a little darker, more saturated than Volupus Pink. They are different kinds of paint.
The same difference applies the other way round: Volupus Pink is a little lighter, 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 Clear Magenta on the colour wheel
All matches: Volupus Pink equivalents · Clear Magenta equivalents