ΔE 25.1, loose: different enough that you should pick on purpose. Gore-Grunta Fur is a little darker, much more muted, warmer than Poppy Red.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 25). Gore-Grunta Fur is a little darker, much more muted, warmer than Poppy Red.
The same difference applies the other way round: Poppy Red is a little 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.
See Poppy Red on the colour wheel See Gore-Grunta Fur on the colour wheel
All matches: Poppy Red equivalents · Gore-Grunta Fur equivalents