Red Ecstasy vs Fresh Blood

How close are they?

ΔE 9.0, close: similar, with a visible difference side by side. Fresh Blood is a little lighter, more muted than Red Ecstasy.

Can I use Fresh Blood instead of Red Ecstasy?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Fresh Blood is a little lighter, more muted than Red Ecstasy.

Can I use Red Ecstasy instead of Fresh Blood?

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