Grey Green vs Light Mustard Khaki

How close are they?

ΔE 9.4, close: similar, with a visible difference side by side. Light Mustard Khaki is a little lighter, warmer than Grey Green.

Can I use Light Mustard Khaki instead of Grey Green?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Light Mustard Khaki is a little lighter, warmer than Grey Green.

Can I use Grey Green instead of Light Mustard Khaki?

The same difference applies the other way round: Grey 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.