ΔE 10.3, fair: the same colour family, but not a straight swap. Vampiric Purple is a little lighter, more muted than Dark Purple.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Vampiric Purple is a little lighter, more muted than Dark Purple.
The same difference applies the other way round: Dark Purple is a little darker, 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 Dark Purple on the colour wheel See Vampiric Purple on the colour wheel
All matches: Dark Purple equivalents · Vampiric Purple equivalents