ΔE 8.1, close: similar, with a visible difference side by side. Fur Brown is more muted, warmer than Umber Brown.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Fur Brown is more muted, warmer than Umber Brown.
The same difference applies the other way round: Umber Brown 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.
See Umber Brown on the colour wheel See Fur Brown on the colour wheel
All matches: Umber Brown equivalents · Fur Brown equivalents