Castellax Bronze vs Fire Opal

How close are they?

ΔE 12.8, fair: the same colour family, but not a straight swap. Fire Opal is a little lighter, more saturated than Castellax Bronze.

Can I use Fire Opal instead of Castellax Bronze?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Fire Opal is a little lighter, more saturated than Castellax Bronze.

Can I use Castellax Bronze instead of Fire Opal?

The same difference applies the other way round: Castellax Bronze is a little darker, 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.