ΔE 18.0, loose: different enough that you should pick on purpose. Ushabti Bone is much more muted, cooler than Barren Dune.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Ushabti Bone is much more muted, cooler than Barren Dune.
The same difference applies the other way round: Barren Dune is much 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 Barren Dune on the colour wheel See Ushabti Bone on the colour wheel
All matches: Barren Dune equivalents · Ushabti Bone equivalents