ΔE 14.0, fair: the same colour family, but not a straight swap. Beige is noticeably lighter, more saturated than Desert Khaki.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Beige is noticeably lighter, more saturated than Desert Khaki.
The same difference applies the other way round: Desert Khaki is noticeably darker, more muted.
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 Desert Khaki on the colour wheel See Beige on the colour wheel
All matches: Desert Khaki equivalents · Beige equivalents