ΔE 12.1, fair: the same colour family, but not a straight swap. Quinacridone Magenta is noticeably lighter, warmer than Druchii Violet. They are different kinds of paint: Citadel Druchii Violet is a wash/shade and Golden Quinacridone 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). Quinacridone Magenta is noticeably lighter, warmer than Druchii Violet. They are different kinds of paint.
The same difference applies the other way round: Druchii Violet is noticeably darker, cooler.
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 Druchii Violet on the colour wheel See Quinacridone Magenta on the colour wheel
All matches: Druchii Violet equivalents · Quinacridone Magenta equivalents