ΔE 19.7, loose: different enough that you should pick on purpose. Ogre Brown is a little lighter, much more saturated than Ruddy Fur.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 20). Ogre Brown is a little lighter, much more saturated than Ruddy Fur.
The same difference applies the other way round: Ruddy Fur is a little darker, much 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 Ruddy Fur on the colour wheel See Ogre Brown on the colour wheel
All matches: Ruddy Fur equivalents · Ogre Brown equivalents