Safety Orange vs Azo Gold

How close are they?

ΔE 15.2, loose: different enough that you should pick on purpose. Azo Gold is noticeably darker, more saturated than Safety Orange.

Can I use Azo Gold instead of Safety Orange?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Azo Gold is noticeably darker, more saturated than Safety Orange.

Can I use Safety Orange instead of Azo Gold?

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