Mustard vs Radiation Glow

How close are they?

ΔE 11.8, fair: the same colour family, but not a straight swap. Radiation Glow is more saturated, warmer than Mustard.

Can I use Radiation Glow instead of Mustard?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Radiation Glow is more saturated, warmer than Mustard.

Can I use Mustard instead of Radiation Glow?

The same difference applies the other way round: Mustard is more muted, cooler.

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.