ΔE 12.2, fair: the same colour family, but not a straight swap. Glacier Blue is a little darker, more saturated than Titanium White.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Glacier Blue is a little darker, more saturated than Titanium White.
The same difference applies the other way round: Titanium White is a little lighter, more muted.
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 Titanium White on the colour wheel See Glacier Blue on the colour wheel
All matches: Titanium White equivalents · Glacier Blue equivalents