ΔE 15.6, loose: different enough that you should pick on purpose. Zombie Rot is a little lighter, more saturated, warmer than Mid Imperial Khaki.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Zombie Rot is a little lighter, more saturated, warmer than Mid Imperial Khaki.
The same difference applies the other way round: Mid Imperial Khaki is a little darker, 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.
See Mid Imperial Khaki on the colour wheel See Zombie Rot on the colour wheel
All matches: Mid Imperial Khaki equivalents · Zombie Rot equivalents