ΔE 9.2, close: similar, with a visible difference side by side. Schilf Green is a little darker, warmer than Phtalo Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Schilf Green is a little darker, warmer than Phtalo Green.
The same difference applies the other way round: Phtalo Green is a little lighter, 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 Phtalo Green on the colour wheel See Schilf Green on the colour wheel
All matches: Phtalo Green equivalents · Schilf Green equivalents