ΔE 13.2, fair: the same colour family, but not a straight swap. UK Light Mud is a little darker, more muted than Dark Imperial Khaki.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). UK Light Mud is a little darker, more muted than Dark Imperial Khaki.
The same difference applies the other way round: Dark Imperial Khaki is a little lighter, more saturated.
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 Dark Imperial Khaki on the colour wheel See UK Light Mud on the colour wheel
All matches: Dark Imperial Khaki equivalents · UK Light Mud equivalents