ΔE 10.8, fair: the same colour family, but not a straight swap. Permanent Maroon is a little darker, more muted, cooler than Beret Maroon.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Permanent Maroon is a little darker, more muted, cooler than Beret Maroon.
The same difference applies the other way round: Beret Maroon is a little lighter, more saturated, warmer.
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 Beret Maroon on the colour wheel See Permanent Maroon on the colour wheel
All matches: Beret Maroon equivalents · Permanent Maroon equivalents