Graveyard Earth vs Onyx Skin

How close are they?

ΔE 11.5, fair: the same colour family, but not a straight swap. Onyx Skin is more muted, cooler than Graveyard Earth.

Can I use Onyx Skin instead of Graveyard Earth?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Onyx Skin is more muted, cooler than Graveyard Earth.

Can I use Graveyard Earth instead of Onyx Skin?

The same difference applies the other way round: Graveyard Earth 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.