ΔE 10.0, close: similar, with a visible difference side by side. Undead Flesh is a little lighter, warmer than Mid Imperial Khaki.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Undead Flesh is a little lighter, warmer than Mid Imperial Khaki.
The same difference applies the other way round: Mid Imperial Khaki is a little darker, 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 Undead Flesh on the colour wheel
All matches: Mid Imperial Khaki equivalents · Undead Flesh equivalents