Yellow-Brown Ops vs Beasty Brown

How close are they?

ΔE 9.8, close: similar, with a visible difference side by side. Beasty Brown is a little lighter, more saturated, warmer than Yellow-Brown Ops.

Can I use Beasty Brown instead of Yellow-Brown Ops?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Beasty Brown is a little lighter, more saturated, warmer than Yellow-Brown Ops.

Can I use Yellow-Brown Ops instead of Beasty Brown?

The same difference applies the other way round: Yellow-Brown Ops is a little darker, more muted, cooler.

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.