ΔE 13.9, fair: the same colour family, but not a straight swap. Insignia White is a little darker, more saturated than Zinc White.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Insignia White is a little darker, more saturated than Zinc White.
The same difference applies the other way round: Zinc 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 Zinc White on the colour wheel See Insignia White on the colour wheel
All matches: Zinc White equivalents · Insignia White equivalents