Jokaero Orange vs Orange Brown

How close are they?

ΔE 24.1, loose: different enough that you should pick on purpose. Orange Brown is a little darker, much more muted than Jokaero Orange.

Can I use Orange Brown instead of Jokaero Orange?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 24). Orange Brown is a little darker, much more muted than Jokaero Orange.

Can I use Jokaero Orange instead of Orange Brown?

The same difference applies the other way round: Jokaero Orange is a little 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.