Spaceship Exterior vs J.N. Gray

How close are they?

ΔE 10.4, fair: the same colour family, but not a straight swap. J.N. Gray is a little darker, more saturated than Spaceship Exterior.

Can I use J.N. Gray instead of Spaceship Exterior?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). J.N. Gray is a little darker, more saturated than Spaceship Exterior.

Can I use Spaceship Exterior instead of J.N. Gray?

The same difference applies the other way round: Spaceship Exterior 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.