ΔE 5.3, very close: most people won’t see a difference side by side. Ushabti Bone is a little darker, cooler than Grimy Grey.
Yes, for most jobs. Very close match (ΔE 5). Ushabti Bone is a little darker, cooler than Grimy Grey.
The same difference applies the other way round: Grimy Grey is a little lighter, 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 Grimy Grey on the colour wheel See Ushabti Bone on the colour wheel
All matches: Grimy Grey equivalents · Ushabti Bone equivalents