Ryza Rust vs Fluorescent Orange

How close are they?

ΔE 9.9, close: similar, with a visible difference side by side. Fluorescent Orange is a little lighter, more saturated than Ryza Rust. They are different kinds of paint: Citadel Ryza Rust is an opaque base/layer paint and Golden Fluorescent Orange 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 Orange instead of Ryza Rust?

Usually, if you are not matching paint already on the model. Close match (ΔE 10). Fluorescent Orange is a little lighter, more saturated than Ryza Rust. They are different kinds of paint.

Can I use Ryza Rust instead of Fluorescent Orange?

The same difference applies the other way round: Ryza Rust 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.