Obsidian Skin vs Enrapturess Dusk

How close are they?

ΔE 9.2, close: similar, with a visible difference side by side. Enrapturess Dusk is a little lighter, more saturated than Obsidian Skin.

Can I use Enrapturess Dusk instead of Obsidian Skin?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Enrapturess Dusk is a little lighter, more saturated than Obsidian Skin.

Can I use Obsidian Skin instead of Enrapturess Dusk?

The same difference applies the other way round: Obsidian Skin 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.