ΔE 15.4, loose: different enough that you should pick on purpose. Camo Sand is noticeably lighter, cooler than Leather Brown.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Camo Sand is noticeably lighter, cooler than Leather Brown.
The same difference applies the other way round: Leather Brown is noticeably darker, 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 Leather Brown on the colour wheel See Camo Sand on the colour wheel
All matches: Leather Brown equivalents · Camo Sand equivalents