Kasrkin Green vs Medium Olive

How close are they?

ΔE 6.3, close: similar, with a visible difference side by side. Medium Olive is warmer than Kasrkin Green.

Can I use Medium Olive instead of Kasrkin Green?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Medium Olive is warmer than Kasrkin Green.

Can I use Kasrkin Green instead of Medium Olive?

The same difference applies the other way round: Kasrkin Green is 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.