ΔE 12.0, fair: the same colour family, but not a straight swap. Elfwood Brown is a little darker, more muted, warmer than Cygor Brown.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Elfwood Brown is a little darker, more muted, warmer than Cygor Brown.
The same difference applies the other way round: Cygor Brown is a little lighter, 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 Cygor Brown on the colour wheel See Elfwood Brown on the colour wheel
All matches: Cygor Brown equivalents · Elfwood Brown equivalents