ΔE 5.8, very close: most people won’t see a difference side by side. German Grey is a little lighter, more muted than Sap Green.
Yes, for most jobs. Very close match (ΔE 6). German Grey is a little lighter, more muted than Sap Green.
The same difference applies the other way round: Sap Green is a little darker, 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 Sap Green on the colour wheel See German Grey on the colour wheel
All matches: Sap Green equivalents · German Grey equivalents