ΔE 7.9, close: similar, with a visible difference side by side. Steel Helmet Green is a little lighter, more muted, warmer than AMT-4 (A-24m) Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Steel Helmet Green is a little lighter, more muted, warmer than AMT-4 (A-24m) Green.
The same difference applies the other way round: AMT-4 (A-24m) Green is a little darker, more saturated, 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 AMT-4 (A-24m) Green on the colour wheel See Steel Helmet Green on the colour wheel
All matches: AMT-4 (A-24m) Green equivalents · Steel Helmet Green equivalents