ΔE 10.3, fair: the same colour family, but not a straight swap. Consul Blue is a little darker, more saturated, warmer than Rainfall Blue.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Consul Blue is a little darker, more saturated, warmer than Rainfall Blue.
The same difference applies the other way round: Rainfall Blue is a little lighter, more muted, 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 Rainfall Blue on the colour wheel See Consul Blue on the colour wheel
All matches: Rainfall Blue equivalents · Consul Blue equivalents