ΔE 11.8, fair: the same colour family, but not a straight swap. Lilac Purple is a little lighter, warmer than Coven Purple.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Lilac Purple is a little lighter, warmer than Coven Purple.
The same difference applies the other way round: Coven Purple is a little 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 Coven Purple on the colour wheel See Lilac Purple on the colour wheel
All matches: Coven Purple equivalents · Lilac Purple equivalents