Rhinox Hide vs Burnt Sienna Umber

How close are they?

ΔE 8.7, close: similar, with a visible difference side by side. Burnt Sienna Umber is more muted, warmer than Rhinox Hide.

Can I use Burnt Sienna Umber instead of Rhinox Hide?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Burnt Sienna Umber is more muted, warmer than Rhinox Hide.

Can I use Rhinox Hide instead of Burnt Sienna Umber?

The same difference applies the other way round: Rhinox Hide is more saturated, 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.