Charming Chartreuse vs Fluor Yellow

How close are they?

ΔE 9.2, close: similar, with a visible difference side by side. Fluor Yellow is a little lighter than Charming Chartreuse. They are different kinds of paint: Army Painter Charming Chartreuse is a one-coat contrast-style paint and Green Stuff World Fluor Yellow is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.

Can I use Fluor Yellow instead of Charming Chartreuse?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Fluor Yellow is a little lighter than Charming Chartreuse. They are different kinds of paint.

Can I use Charming Chartreuse instead of Fluor Yellow?

The same difference applies the other way round: Charming Chartreuse is a little darker.

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.