Fire Giant Orange vs Ragweed Orange

How close are they?

ΔE 20.6, loose: different enough that you should pick on purpose. Ragweed Orange is a little darker, more saturated, cooler than Fire Giant Orange.

Can I use Ragweed Orange instead of Fire Giant Orange?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Ragweed Orange is a little darker, more saturated, cooler than Fire Giant Orange.

Can I use Fire Giant Orange instead of Ragweed Orange?

The same difference applies the other way round: Fire Giant Orange is a little lighter, more muted, warmer.

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.