Light Mustard Khaki vs Yellowed Bone

How close are they?

ΔE 8.4, close: similar, with a visible difference side by side. Yellowed Bone is a little lighter, more muted than Light Mustard Khaki.

Can I use Yellowed Bone instead of Light Mustard Khaki?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Yellowed Bone is a little lighter, more muted than Light Mustard Khaki.

Can I use Light Mustard Khaki instead of Yellowed Bone?

The same difference applies the other way round: Light Mustard Khaki is a little 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.