Steel Helmet Green vs Green Brown

How close are they?

ΔE 9.3, close: similar, with a visible difference side by side. Green Brown is a little lighter, warmer than Steel Helmet Green.

Can I use Green Brown instead of Steel Helmet Green?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Green Brown is a little lighter, warmer than Steel Helmet Green.

Can I use Steel Helmet Green instead of Green Brown?

The same difference applies the other way round: Steel Helmet 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.