Black Forest vs Obsidian Pigment Toner

How close are they?

ΔE 9.8, close: similar, with a visible difference side by side. Obsidian Pigment Toner is cooler than Black Forest.

Can I use Obsidian Pigment Toner instead of Black Forest?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Obsidian Pigment Toner is cooler than Black Forest.

Can I use Black Forest instead of Obsidian Pigment Toner?

The same difference applies the other way round: Black Forest is 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.