ΔE 11.1, fair: the same colour family, but not a straight swap. Clear Red is a little lighter, more saturated than Baal Red. They are different kinds of paint: Citadel Baal Red is a one-coat contrast-style paint and Reaper Clear Red is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Clear Red is a little lighter, more saturated than Baal Red. They are different kinds of paint.
The same difference applies the other way round: Baal Red is a little darker, 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 Clear Red on the colour wheel
All matches: Baal Red equivalents · Clear Red equivalents