ΔE 8.0, close: similar, with a visible difference side by side. Hydra Green is a little lighter, warmer than Scarab Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Hydra Green is a little lighter, warmer than Scarab Green.
The same difference applies the other way round: Scarab Green is a little darker, 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 Scarab Green on the colour wheel See Hydra Green on the colour wheel
All matches: Scarab Green equivalents · Hydra Green equivalents