Barren Yellow vs Balor Brown

How close are they?

ΔE 7.2, close: similar, with a visible difference side by side. Balor Brown is more muted than Barren Yellow.

Can I use Balor Brown instead of Barren Yellow?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Balor Brown is more muted than Barren Yellow.

Can I use Barren Yellow instead of Balor Brown?

The same difference applies the other way round: Barren Yellow is 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.