Gore-Grunta Fur vs Military Yellow

How close are they?

ΔE 26.7, loose: different enough that you should pick on purpose. Military Yellow is noticeably darker, much more muted, warmer than Gore-Grunta Fur.

Can I use Military Yellow instead of Gore-Grunta Fur?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 27). Military Yellow is noticeably darker, much more muted, warmer than Gore-Grunta Fur.

Can I use Gore-Grunta Fur instead of Military Yellow?

The same difference applies the other way round: Gore-Grunta Fur is noticeably lighter, much 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.