Clear Yellow vs Radiation Glow

How close are they?

ΔE 7.2, close: similar, with a visible difference side by side. Radiation Glow is more muted than Clear Yellow.

Can I use Radiation Glow instead of Clear Yellow?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Radiation Glow is more muted than Clear Yellow.

Can I use Clear Yellow instead of Radiation Glow?

The same difference applies the other way round: Clear Yellow is more saturated.

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.