ΔE 19.3, loose: different enough that you should pick on purpose. Beetle Green is much more muted, cooler than Absinthe.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Beetle Green is much more muted, cooler than Absinthe.
The same difference applies the other way round: Absinthe is much more saturated, warmer.
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 Absinthe on the colour wheel See Beetle Green on the colour wheel
All matches: Absinthe equivalents · Beetle Green equivalents