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