Pure Green vs Mortarion Green Clear

How close are they?

ΔE 9.8, close: similar, with a visible difference side by side. Mortarion Green Clear is a little darker than Pure Green.

Can I use Mortarion Green Clear instead of Pure Green?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Mortarion Green Clear is a little darker than Pure Green.

Can I use Pure Green instead of Mortarion Green Clear?

The same difference applies the other way round: Pure Green is a little lighter.

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.