ΔE 3.7, very close: most people won’t see a difference side by side. Our swatches for the two are almost the same. They are different kinds of paint: Army Painter Nuclear Sunrise is a one-coat contrast-style paint and Citadel Trollslayer Orange is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
✓ Herrick Games paint comparison chart lists these two as equivalents.
Yes, for most jobs. Very close match (ΔE 4). The swatches are almost the same. They are different kinds of paint.
The same difference applies the other way round.
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 Nuclear Sunrise on the colour wheel See Trollslayer Orange on the colour wheel
All matches: Nuclear Sunrise equivalents · Trollslayer Orange equivalents