ΔE 12.9, fair: the same colour family, but not a straight swap. Mulled Berry is a little lighter, warmer than Dark Violet.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Mulled Berry is a little lighter, warmer than Dark Violet.
The same difference applies the other way round: Dark Violet 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 Dark Violet on the colour wheel See Mulled Berry on the colour wheel
All matches: Dark Violet equivalents · Mulled Berry equivalents