Dusty Skull vs Khaki Shadow

How close are they?

ΔE 7.0, close: similar, with a visible difference side by side. Khaki Shadow is a little lighter, more saturated than Dusty Skull.

Can I use Khaki Shadow instead of Dusty Skull?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Khaki Shadow is a little lighter, more saturated than Dusty Skull.

Can I use Dusty Skull instead of Khaki Shadow?

The same difference applies the other way round: Dusty Skull is a little darker, more muted.

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.