Etherium Blue vs Gigawatt Blue

How close are they?

ΔE 11.5, fair: the same colour family, but not a straight swap. Gigawatt Blue is more saturated, cooler than Etherium Blue.

Can I use Gigawatt Blue instead of Etherium Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Gigawatt Blue is more saturated, cooler than Etherium Blue.

Can I use Etherium Blue instead of Gigawatt Blue?

The same difference applies the other way round: Etherium Blue is more muted, warmer.

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.