ΔE 10.7, fair: the same colour family, but not a straight swap. Transparent Magenta is a little lighter, more saturated than Wazdakka Red. They are different kinds of paint: Citadel Wazdakka Red is an opaque base/layer paint and Green Stuff World Transparent Magenta 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). Transparent Magenta is a little lighter, more saturated than Wazdakka Red. They are different kinds of paint.
The same difference applies the other way round: Wazdakka 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 Wazdakka Red on the colour wheel See Transparent Magenta on the colour wheel
All matches: Wazdakka Red equivalents · Transparent Magenta equivalents