How are you planning to paint it?
spray can?
brush?
airbrush?
If going the spraycan route, Testor’s bright blue would be a close enough match.
Airbrush, I would probably go with Tamiya light blue (acrylic) or Model Master gloss light bright blue enamel.
handbrushing, I would suggest Model Master gloss light bright blue enamel.
Those may not be exact, but often “exact” doesn’t look correct in the model world anyway, and I believe these would certainly get you close enuff.