ΔE 9.9, close: similar, with a visible difference side by side. Flanker Light Blue is a little darker, more saturated than Duck Egg Blue FS 35622.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Flanker Light Blue is a little darker, more saturated than Duck Egg Blue FS 35622.
The same difference applies the other way round: Duck Egg Blue FS 35622 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 Duck Egg Blue FS 35622 on the colour wheel See Flanker Light Blue on the colour wheel
All matches: Duck Egg Blue FS 35622 equivalents · Flanker Light Blue equivalents