ΔE 14.1, fair: the same colour family, but not a straight swap. Burnt Sienna is noticeably darker, more saturated, cooler than Gore-Grunta Fur. They are different kinds of paint: Citadel Gore-Grunta Fur is a one-coat contrast-style paint and Golden Burnt Sienna is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Burnt Sienna is noticeably darker, more saturated, cooler than Gore-Grunta Fur. They are different kinds of paint.
The same difference applies the other way round: Gore-Grunta Fur is noticeably lighter, more muted, 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 Gore-Grunta Fur on the colour wheel See Burnt Sienna on the colour wheel
All matches: Gore-Grunta Fur equivalents · Burnt Sienna equivalents