ΔE 18.7, loose: different enough that you should pick on purpose. Cement Grey is a little darker, more muted, cooler than Bone Khaki.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Cement Grey is a little darker, more muted, cooler than Bone Khaki.
The same difference applies the other way round: Bone Khaki is a little lighter, more saturated, 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 Bone Khaki on the colour wheel See Cement Grey on the colour wheel
All matches: Bone Khaki equivalents · Cement Grey equivalents