Gunmetal Blue vs Natural Steel

How close are they?

ΔE 11.3, fair: the same colour family, but not a straight swap. Natural Steel is more muted than Gunmetal Blue.

Can I use Natural Steel instead of Gunmetal Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Natural Steel is more muted than Gunmetal Blue.

Can I use Gunmetal Blue instead of Natural Steel?

The same difference applies the other way round: Gunmetal Blue is more saturated.

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.