Radiant Orange vs Khaki Drill

How close are they?

ΔE 18.6, loose: different enough that you should pick on purpose. Khaki Drill is noticeably lighter, more muted, cooler than Radiant Orange.

Can I use Khaki Drill instead of Radiant Orange?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Khaki Drill is noticeably lighter, more muted, cooler than Radiant Orange.

Can I use Radiant Orange instead of Khaki Drill?

The same difference applies the other way round: Radiant Orange is noticeably darker, more saturated, 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.