ΔE 10.1, fair: the same colour family, but not a straight swap. Dark Prussian Blue is more muted, cooler than Blanched Berry.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Dark Prussian Blue is more muted, cooler than Blanched Berry.
The same difference applies the other way round: Blanched Berry is 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 Blanched Berry on the colour wheel See Dark Prussian Blue on the colour wheel
All matches: Blanched Berry equivalents · Dark Prussian Blue equivalents