ΔE 16.2, loose: different enough that you should pick on purpose. Ogryn Camo is noticeably lighter, more saturated, cooler than British Light Mud.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Ogryn Camo is noticeably lighter, more saturated, cooler than British Light Mud.
The same difference applies the other way round: British Light Mud is noticeably darker, more muted, warmer.
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 British Light Mud on the colour wheel See Ogryn Camo on the colour wheel
All matches: British Light Mud equivalents · Ogryn Camo equivalents