ΔE 8.2, close: similar, with a visible difference side by side. US Light Green is a little darker, more muted, warmer than RAL 6011 Resedagrün.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). US Light Green is a little darker, more muted, warmer than RAL 6011 Resedagrün.
The same difference applies the other way round: RAL 6011 Resedagrün is a little lighter, 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 RAL 6011 Resedagrün on the colour wheel See US Light Green on the colour wheel
All matches: RAL 6011 Resedagrün equivalents · US Light Green equivalents