Blood Angels Red vs Radiant Orange

How close are they?

ΔE 34.8, loose: different enough that you should pick on purpose. Radiant Orange is much more muted, warmer than Blood Angels Red.

Can I use Radiant Orange instead of Blood Angels Red?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 35). Radiant Orange is much more muted, warmer than Blood Angels Red.

Can I use Blood Angels Red instead of Radiant Orange?

The same difference applies the other way round: Blood Angels Red is much more saturated, 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.