Absinthe vs Beetle Green

How close are they?

ΔE 19.1, loose: different enough that you should pick on purpose. Beetle Green is much more muted, cooler than Absinthe.

Can I use Beetle Green instead of Absinthe?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Beetle Green is much more muted, cooler than Absinthe.

Can I use Absinthe instead of Beetle Green?

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.