Steel Helmet Green vs Russian Green (4BO)

How close are they?

ΔE 9.2, close: similar, with a visible difference side by side. Russian Green (4BO) is cooler than Steel Helmet Green.

Can I use Russian Green (4BO) instead of Steel Helmet Green?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Russian Green (4BO) is cooler than Steel Helmet Green.

Can I use Steel Helmet Green instead of Russian Green (4BO)?

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

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.