Nounlapis lazuli blue; bright blue; azure

Nounred-flanked bluetail (species of flycatcher, Tarsiger cyanurus)

NounFormosan whistling thrush (Myophonus insularis) · blue-and-white flycatcher (Cyanoptila cyanomelana)

Nouneastern bluebird (Sialia sialis)

Nounelongate janthina (Janthina globosa)

Nounblue-glazed roof tile

Nounnemophila (Nemophila menziesii); baby blue-eyes

Nounblue admiral (species of nymphalid butterfly, Kaniska canace)

Noungold-ribbon grouper (species of fish, Aulacocephalus temmincki)

NounLidth's jay (Garrulus lidthi)

Nounsapphire devil (Chrysiptera cyanea)

NounEucorydia yasumatsui (species of cockroach)

Nounscarlet pimpernel (Anagallis arvensis)

Nounbeach speedwell; Veronica Longifolia

NounAsian fairy bluebird (Irena puella)

Nounindigo bunting (Passerina cyanea)