ΔE 4.3, very close: most people won’t see a difference side by side. Trollblood Base is more saturated than Nighthaunt Gloom. They are different kinds of paint: Citadel Nighthaunt Gloom is a one-coat contrast-style paint and Formula P3 Trollblood Base is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Yes, for most jobs. Very close match (ΔE 4). Trollblood Base is more saturated than Nighthaunt Gloom. They are different kinds of paint.
The same difference applies the other way round: Nighthaunt Gloom 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 Nighthaunt Gloom on the colour wheel See Trollblood Base on the colour wheel
All matches: Nighthaunt Gloom equivalents · Trollblood Base equivalents