ΔE 11.3, fair: the same colour family, but not a straight swap. Scrofulous Brown is a little darker than Safety Orange.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Scrofulous Brown is a little darker than Safety Orange.
The same difference applies the other way round: Safety Orange is a little lighter.
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 Safety Orange on the colour wheel See Scrofulous Brown on the colour wheel
All matches: Safety Orange equivalents · Scrofulous Brown equivalents