Bleached Bone vs Leather White

How close are they?

ΔE 6.8, close: similar, with a visible difference side by side. Leather White is a little darker, more muted than Bleached Bone.

Can I use Leather White instead of Bleached Bone?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Leather White is a little darker, more muted than Bleached Bone.

Can I use Bleached Bone instead of Leather White?

The same difference applies the other way round: Bleached Bone is a little lighter, 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.