Trollslayer Orange vs Orange Neon

How close are they?

ΔE 11.4, fair: the same colour family, but not a straight swap. Orange Neon is a little darker, more saturated than Trollslayer Orange. They are different kinds of paint: Citadel Trollslayer Orange is an opaque base/layer paint and Scale75 Orange Neon is a fluorescent or effect paint, so they won’t behave the same on the model even where the colour is close.

Can I use Orange Neon instead of Trollslayer Orange?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Orange Neon is a little darker, more saturated than Trollslayer Orange. They are different kinds of paint.

Can I use Trollslayer Orange instead of Orange Neon?

The same difference applies the other way round: Trollslayer Orange is a little lighter, 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.