ΔE 6.1, close: similar, with a visible difference side by side. Flanker Light Blue is a little lighter, more muted than Bright Green Blue.
Usually, if you are not matching paint already on the model. Close match (ΔE 6). Flanker Light Blue is a little lighter, more muted than Bright Green Blue.
The same difference applies the other way round: Bright Green Blue is a little darker, 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 Bright Green Blue on the colour wheel See Flanker Light Blue on the colour wheel
All matches: Bright Green Blue equivalents · Flanker Light Blue equivalents