ΔE 14.9, fair: the same colour family, but not a straight swap. Royal Brown is a little darker, more muted, warmer than Screamer Pink.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Royal Brown is a little darker, more muted, warmer than Screamer Pink.
The same difference applies the other way round: Screamer Pink 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 Screamer Pink on the colour wheel See Royal Brown on the colour wheel
All matches: Screamer Pink equivalents · Royal Brown equivalents