ΔE 8.8, close: similar, with a visible difference side by side. Transparent Red is more saturated than Baal Red. They are different kinds of paint: Citadel Baal Red is a one-coat contrast-style paint and Green Stuff World Transparent Red is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Transparent Red is more saturated than Baal Red. They are different kinds of paint.
The same difference applies the other way round: Baal Red is more muted.
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 Baal Red on the colour wheel See Transparent Red on the colour wheel
All matches: Baal Red equivalents · Transparent Red equivalents