ΔE 11.9, fair: the same colour family, but not a straight swap. Warm Brown is a little darker, more muted than Cygor Brown.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Warm Brown is a little darker, more muted than Cygor Brown.
The same difference applies the other way round: Cygor Brown is a little lighter, more saturated.
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 Warm Brown on the colour wheel
All matches: Cygor Brown equivalents · Warm Brown equivalents