ΔE 7.4, close: similar, with a visible difference side by side. Sand Yellow is a little lighter, more muted than Deep Khaki Drill.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Sand Yellow is a little lighter, more muted than Deep Khaki Drill.
The same difference applies the other way round: Deep Khaki Drill is a little darker, more saturated.
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 Deep Khaki Drill on the colour wheel See Sand Yellow on the colour wheel
All matches: Deep Khaki Drill equivalents · Sand Yellow equivalents