ΔE 19.7, loose: different enough that you should pick on purpose. March of the Fire Ants is noticeably darker, more muted, warmer than Charred Bone.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 20). March of the Fire Ants is noticeably darker, more muted, warmer than Charred Bone.
The same difference applies the other way round: Charred Bone is noticeably lighter, more saturated, cooler.
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 Charred Bone on the colour wheel See March of the Fire Ants on the colour wheel
All matches: Charred Bone equivalents · March of the Fire Ants equivalents