ΔE 15.3, loose: different enough that you should pick on purpose. Dark Green 2 is a little darker, much more saturated than Dawnstone.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Dark Green 2 is a little darker, much more saturated than Dawnstone.
The same difference applies the other way round: Dawnstone is a little lighter, much more muted.
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 Dawnstone on the colour wheel See Dark Green 2 on the colour wheel
All matches: Dawnstone equivalents · Dark Green 2 equivalents