Fuegan Orange vs Andalusian Earth

How close are they?

ΔE 65.0, loose: different enough that you should pick on purpose. Andalusian Earth is noticeably darker, much more muted than Fuegan Orange.

Can I use Andalusian Earth instead of Fuegan Orange?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 65). Andalusian Earth is noticeably darker, much more muted than Fuegan Orange.

Can I use Fuegan Orange instead of Andalusian Earth?

The same difference applies the other way round: Fuegan Orange is noticeably lighter, much 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.