ΔE 14.7, fair: the same colour family, but not a straight swap. Beaten Purple is noticeably darker than Luxion Purple. They are different kinds of paint: Citadel Luxion Purple is a one-coat contrast-style paint and Formula P3 Beaten Purple 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 15). Beaten Purple is noticeably darker than Luxion Purple. They are different kinds of paint.
The same difference applies the other way round: Luxion Purple is noticeably lighter.
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 Luxion Purple on the colour wheel See Beaten Purple on the colour wheel
All matches: Luxion Purple equivalents · Beaten Purple equivalents