Light Mustard Khaki vs Desert Camo

How close are they?

ΔE 15.8, loose: different enough that you should pick on purpose. Desert Camo is noticeably darker, more saturated, warmer than Light Mustard Khaki.

Can I use Desert Camo instead of Light Mustard Khaki?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Desert Camo is noticeably darker, more saturated, warmer than Light Mustard Khaki.

Can I use Light Mustard Khaki instead of Desert Camo?

The same difference applies the other way round: Light Mustard Khaki is noticeably lighter, more muted, cooler.

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.