ΔE 7.6, close: similar, with a visible difference side by side. Royal Brown is more saturated than Rhinox Hide.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Royal Brown is more saturated than Rhinox Hide.
The same difference applies the other way round: Rhinox Hide is more muted.
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.
See Rhinox Hide on the colour wheel See Royal Brown on the colour wheel
All matches: Rhinox Hide equivalents · Royal Brown equivalents