ΔE 4.9, very close: most people won’t see a difference side by side. Deep Green is more saturated, warmer than Dark Green 2 (IJN).
Yes, for most jobs. Very close match (ΔE 5). Deep Green is more saturated, warmer than Dark Green 2 (IJN).
The same difference applies the other way round: Dark Green 2 (IJN) is 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 2 (IJN) on the colour wheel See Deep Green on the colour wheel
All matches: Dark Green 2 (IJN) equivalents · Deep Green equivalents