ΔE 15.8, loose: different enough that you should pick on purpose. Dawnstone is a little lighter, much more muted than Dark Olive Green FS-34130.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Dawnstone is a little lighter, much more muted than Dark Olive Green FS-34130.
The same difference applies the other way round: Dark Olive Green FS-34130 is a little darker, 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 Dark Olive Green FS-34130 on the colour wheel See Dawnstone on the colour wheel
All matches: Dark Olive Green FS-34130 equivalents · Dawnstone equivalents