ΔE 6.7, close: similar, with a visible difference side by side. Green Yellow is a little lighter, cooler than Khaki.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Green Yellow is a little lighter, cooler than Khaki.
The same difference applies the other way round: Khaki 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.
See Khaki on the colour wheel See Green Yellow on the colour wheel
All matches: Khaki equivalents · Green Yellow equivalents