ΔE 12.9, fair: the same colour family, but not a straight swap. White Blue is a little lighter, more muted, warmer than Bright Sapphire.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). White Blue is a little lighter, more muted, warmer than Bright Sapphire.
The same difference applies the other way round: Bright Sapphire is a little darker, 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 Bright Sapphire on the colour wheel See White Blue on the colour wheel
All matches: Bright Sapphire equivalents · White Blue equivalents