ΔE 12.7, fair: the same colour family, but not a straight swap. Midnight Purple is a little darker, much more muted than Malefic Purple.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Midnight Purple is a little darker, much more muted than Malefic Purple.
The same difference applies the other way round: Malefic Purple is a little lighter, much more saturated.
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 Malefic Purple on the colour wheel See Midnight Purple on the colour wheel
All matches: Malefic Purple equivalents · Midnight Purple equivalents