ΔE 18.9, loose: different enough that you should pick on purpose. Shadow Violet is much more saturated, cooler than Blanched Berry.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 19). Shadow Violet is much more saturated, cooler than Blanched Berry.
The same difference applies the other way round: Blanched Berry is much more muted, 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 Shadow Violet on the colour wheel
All matches: Blanched Berry equivalents · Shadow Violet equivalents