ΔE 16.7, loose: different enough that you should pick on purpose. Squig Orange is more saturated, warmer than Matt Blood Red. They are different kinds of paint: AMMO by Mig Matt Blood Red is an ink, glaze or transparent paint and Citadel Squig Orange is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Squig Orange is more saturated, warmer than Matt Blood Red. They are different kinds of paint.
The same difference applies the other way round: Matt Blood Red is 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.
See Matt Blood Red on the colour wheel See Squig Orange on the colour wheel
All matches: Matt Blood Red equivalents · Squig Orange equivalents