Gore-Grunta Fur vs Papyrus

How close are they?

ΔE 23.8, loose: different enough that you should pick on purpose. Papyrus is a little darker, more muted than Gore-Grunta Fur.

Can I use Papyrus instead of Gore-Grunta Fur?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 24). Papyrus is a little darker, more muted than Gore-Grunta Fur.

Can I use Gore-Grunta Fur instead of Papyrus?

The same difference applies the other way round: Gore-Grunta Fur is a little lighter, more saturated.

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.