ΔE 9.8, close: similar, with a visible difference side by side. Light Yellow is more muted than C.P. Cadmium Yellow Dark.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Light Yellow is more muted than C.P. Cadmium Yellow Dark.
The same difference applies the other way round: C.P. Cadmium Yellow Dark 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.
See C.P. Cadmium Yellow Dark on the colour wheel See Light Yellow on the colour wheel
All matches: C.P. Cadmium Yellow Dark equivalents · Light Yellow equivalents