ΔE 11.7, fair: the same colour family, but not a straight swap. Light Yellow is a little darker, more saturated than Radome.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Light Yellow is a little darker, more saturated than Radome.
The same difference applies the other way round: Radome is a little lighter, 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.
See Radome on the colour wheel See Light Yellow on the colour wheel
All matches: Radome equivalents · Light Yellow equivalents