Lupercal Green vs Dark Green (Luftwaffe)

How close are they?

ΔE 9.7, close: similar, with a visible difference side by side. Dark Green (Luftwaffe) is a little lighter, warmer than Lupercal Green.

Can I use Dark Green (Luftwaffe) instead of Lupercal Green?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Dark Green (Luftwaffe) is a little lighter, warmer than Lupercal Green.

Can I use Lupercal Green instead of Dark Green (Luftwaffe)?

The same difference applies the other way round: Lupercal 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.