Reddish Orange vs Dragon Red

How close are they?

ΔE 7.3, close: similar, with a visible difference side by side. Dragon Red is more saturated than Reddish Orange.

Can I use Dragon Red instead of Reddish Orange?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Dragon Red is more saturated than Reddish Orange.

Can I use Reddish Orange instead of Dragon Red?

The same difference applies the other way round: Reddish Orange is 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.