ΔE 13.5, fair: the same colour family, but not a straight swap. Ultramarine Blue is a little darker, more muted, warmer than Da Ba Dee.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Ultramarine Blue is a little darker, more muted, warmer than Da Ba Dee.
The same difference applies the other way round: Da Ba Dee 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 Da Ba Dee on the colour wheel See Ultramarine Blue on the colour wheel
All matches: Da Ba Dee equivalents · Ultramarine Blue equivalents