ΔE 23.5, loose: different enough that you should pick on purpose. Celestial Violet is noticeably darker, much more muted than People Eater.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 24). Celestial Violet is noticeably darker, much more muted than People Eater.
The same difference applies the other way round: People Eater is noticeably 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 People Eater on the colour wheel See Celestial Violet on the colour wheel
All matches: People Eater equivalents · Celestial Violet equivalents