ΔE 13.4, fair: the same colour family, but not a straight swap. Galvanic Corrosion is much more saturated than Bestigor Flesh. They are different kinds of paint: Citadel Bestigor Flesh is an opaque base/layer paint and Vallejo Galvanic Corrosion is a fluorescent or effect 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 13). Galvanic Corrosion is much more saturated than Bestigor Flesh. They are different kinds of paint.
The same difference applies the other way round: Bestigor Flesh is much more muted.
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 Bestigor Flesh on the colour wheel See Galvanic Corrosion on the colour wheel
All matches: Bestigor Flesh equivalents · Galvanic Corrosion equivalents