ΔE 8.8, close: similar, with a visible difference side by side. Dark Yellow is a little darker, cooler than Khaki.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Dark Yellow is a little darker, cooler than Khaki.
The same difference applies the other way round: Khaki is a little lighter, 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 Dark Yellow on the colour wheel
All matches: Khaki equivalents · Dark Yellow equivalents