ΔE 15.1, loose: different enough that you should pick on purpose. Iraqi Sand is noticeably lighter, cooler than Bootstrap Leather.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Iraqi Sand is noticeably lighter, cooler than Bootstrap Leather.
The same difference applies the other way round: Bootstrap Leather 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 Bootstrap Leather on the colour wheel See Iraqi Sand on the colour wheel
All matches: Bootstrap Leather equivalents · Iraqi Sand equivalents