Dusty Skull vs Griffon Claw

How close are they?

ΔE 8.1, close: similar, with a visible difference side by side. Griffon Claw is a little lighter, more muted than Dusty Skull.

Can I use Griffon Claw instead of Dusty Skull?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Griffon Claw is a little lighter, more muted than Dusty Skull.

Can I use Dusty Skull instead of Griffon Claw?

The same difference applies the other way round: Dusty Skull 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.