ΔE 15.4, loose: different enough that you should pick on purpose. Squig Orange is a little darker, warmer than Dead Red.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Squig Orange is a little darker, warmer than Dead Red.
The same difference applies the other way round: Dead Red is a little lighter, 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.
See Dead Red on the colour wheel See Squig Orange on the colour wheel
All matches: Dead Red equivalents · Squig Orange equivalents