Flesh Tearers Red vs Sanguinem Red

How close are they?

ΔE 15.4, loose: different enough that you should pick on purpose. Sanguinem Red is noticeably lighter, more muted than Flesh Tearers Red. They are different kinds of paint: Citadel Flesh Tearers Red is a one-coat contrast-style paint and Green Stuff World Sanguinem Red is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.

Can I use Sanguinem Red instead of Flesh Tearers Red?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Sanguinem Red is noticeably lighter, more muted than Flesh Tearers Red. They are different kinds of paint.

Can I use Flesh Tearers Red instead of Sanguinem Red?

The same difference applies the other way round: Flesh Tearers Red is noticeably 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.