ΔE 13.1, fair: the same colour family, but not a straight swap. Buff is noticeably lighter, more muted than Mid DAK Sand.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Buff is noticeably lighter, more muted than Mid DAK Sand.
The same difference applies the other way round: Mid DAK Sand is noticeably darker, more saturated.
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 Mid DAK Sand on the colour wheel See Buff on the colour wheel
All matches: Mid DAK Sand equivalents · Buff equivalents