Dragon Red vs Hellspawn Red

How close are they?

ΔE 9.2, close: similar, with a visible difference side by side. Hellspawn Red is a little lighter, warmer than Dragon Red.

Can I use Hellspawn Red instead of Dragon Red?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Hellspawn Red is a little lighter, warmer than Dragon Red.

Can I use Dragon Red instead of Hellspawn Red?

The same difference applies the other way round: Dragon Red is a little darker, cooler.

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.