ΔE 17.5, loose: different enough that you should pick on purpose. Pale Green is a little darker, much more muted, warmer than Feral Green.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Pale Green is a little darker, much more muted, warmer than Feral Green.
The same difference applies the other way round: Feral Green is a little lighter, much more saturated, cooler.
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 Feral Green on the colour wheel See Pale Green on the colour wheel
All matches: Feral Green equivalents · Pale Green equivalents