Skeleton Bone vs Bone

How close are they?

ΔE 6.9, close: similar, with a visible difference side by side. Bone is more muted, cooler than Skeleton Bone.

Can I use Bone instead of Skeleton Bone?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Bone is more muted, cooler than Skeleton Bone.

Can I use Skeleton Bone instead of Bone?

The same difference applies the other way round: Skeleton Bone is 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.