Squig Orange vs Firethorn Brown

How close are they?

ΔE 14.5, fair: the same colour family, but not a straight swap. Firethorn Brown is noticeably darker than Squig Orange.

Can I use Firethorn Brown instead of Squig Orange?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Firethorn Brown is noticeably darker than Squig Orange.

Can I use Squig Orange instead of Firethorn Brown?

The same difference applies the other way round: Squig Orange is noticeably lighter.

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.