Webbing Green vs Dark Green 2 (RAF)

How close are they?

ΔE 6.1, close: similar, with a visible difference side by side. Dark Green 2 (RAF) is a little lighter, cooler than Webbing Green.

Can I use Dark Green 2 (RAF) instead of Webbing Green?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Dark Green 2 (RAF) is a little lighter, cooler than Webbing Green.

Can I use Webbing Green instead of Dark Green 2 (RAF)?

The same difference applies the other way round: Webbing Green is a little darker, 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.