ΔE 14.2, fair: the same colour family, but not a straight swap. Purple Black is noticeably lighter, more muted than Blanched Berry.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Purple Black is noticeably lighter, more muted than Blanched Berry.
The same difference applies the other way round: Blanched Berry is noticeably 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 Blanched Berry on the colour wheel See Purple Black on the colour wheel
All matches: Blanched Berry equivalents · Purple Black equivalents