Radome Tan FS 33613 vs Light Khaki Drill

How close are they?

ΔE 6.3, close: similar, with a visible difference side by side. Light Khaki Drill is cooler than Radome Tan FS 33613.

Can I use Light Khaki Drill instead of Radome Tan FS 33613?

Usually, if you are not matching paint already on the model. Close match (ΔE 6). Light Khaki Drill is cooler than Radome Tan FS 33613.

Can I use Radome Tan FS 33613 instead of Light Khaki Drill?

The same difference applies the other way round: Radome Tan FS 33613 is 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.