ΔE 17.7, loose: different enough that you should pick on purpose. Russet is noticeably darker, more muted, cooler than Tuskgor Fur.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Russet is noticeably darker, more muted, cooler than Tuskgor Fur.
The same difference applies the other way round: Tuskgor Fur is noticeably lighter, more saturated, warmer.
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 Tuskgor Fur on the colour wheel See Russet on the colour wheel
All matches: Tuskgor Fur equivalents · Russet equivalents