J.N. Gray vs Insignia White

How close are they?

ΔE 10.6, fair: the same colour family, but not a straight swap. Insignia White is a little lighter, more saturated than J.N. Gray.

Can I use Insignia White instead of J.N. Gray?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Insignia White is a little lighter, more saturated than J.N. Gray.

Can I use J.N. Gray instead of Insignia White?

The same difference applies the other way round: J.N. Gray is a little darker, 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.