ΔE 35.6, loose: different enough that you should pick on purpose. Bag of Bones is noticeably lighter, more saturated, warmer than Dark Green Brown.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 36). Bag of Bones is noticeably lighter, more saturated, warmer than Dark Green Brown.
The same difference applies the other way round: Dark Green Brown is noticeably darker, more muted, 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 Dark Green Brown on the colour wheel See Bag of Bones on the colour wheel
All matches: Dark Green Brown equivalents · Bag of Bones equivalents