Blue Flux vs Amarth Blue

How close are they?

ΔE 14.0, fair: the same colour family, but not a straight swap. Amarth Blue is noticeably darker, warmer than Blue Flux.

Can I use Amarth Blue instead of Blue Flux?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Amarth Blue is noticeably darker, warmer than Blue Flux.

Can I use Blue Flux instead of Amarth Blue?

The same difference applies the other way round: Blue Flux is noticeably lighter, cooler.

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.