Blood Angels Red vs Orange

How close are they?

ΔE 30.3, loose: different enough that you should pick on purpose. Orange is noticeably lighter, more saturated, warmer than Blood Angels Red.

Can I use Orange instead of Blood Angels Red?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 30). Orange is noticeably lighter, more saturated, warmer than Blood Angels Red.

Can I use Blood Angels Red instead of Orange?

The same difference applies the other way round: Blood Angels Red is noticeably darker, more muted, 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.