Bluegrey Dusk vs Glossy Sea Blue

How close are they?

ΔE 11.7, fair: the same colour family, but not a straight swap. Glossy Sea Blue is more muted than Bluegrey Dusk.

Can I use Glossy Sea Blue instead of Bluegrey Dusk?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Glossy Sea Blue is more muted than Bluegrey Dusk.

Can I use Bluegrey Dusk instead of Glossy Sea Blue?

The same difference applies the other way round: Bluegrey Dusk 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.