ΔE 26.0, loose: different enough that you should pick on purpose. Black is noticeably darker, more muted than Purple Black.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 26). Black is noticeably darker, more muted than Purple Black.
The same difference applies the other way round: Purple Black is noticeably lighter, 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 Purple Black on the colour wheel See Black on the colour wheel
All matches: Purple Black equivalents · Black equivalents