Warp Lightning vs Fluorescent Green

How close are they?

ΔE 8.3, close: similar, with a visible difference side by side. Fluorescent Green is a little lighter, more saturated than Warp Lightning. They are different kinds of paint: Citadel Warp Lightning is a one-coat contrast-style paint and Tamiya Fluorescent Green 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 Fluorescent Green instead of Warp Lightning?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Fluorescent Green is a little lighter, more saturated than Warp Lightning. They are different kinds of paint.

Can I use Warp Lightning instead of Fluorescent Green?

The same difference applies the other way round: Warp Lightning 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.