Elemental Bolt vs Forest of Shadows

How close are they?

ΔE 9.3, close: similar, with a visible difference side by side. Forest of Shadows is a little darker, more muted than Elemental Bolt.

Can I use Forest of Shadows instead of Elemental Bolt?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Forest of Shadows is a little darker, more muted than Elemental Bolt.

Can I use Elemental Bolt instead of Forest of Shadows?

The same difference applies the other way round: Elemental Bolt is a little lighter, 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.