←
Old English blāw (cognate)
←
Middle French bleu (inherited)
←
Old French bloe (inherited)
←
Old French bleve (mention)
←
Old French blef (mention)
←
Old High German blāo (cognate)
←
Proto-Indo-European *bʰléh₁- (derived)
←
Proto-Indo-European *bʰlh₁- (mention)
←
Proto-Indo-European *bʰleh₁- (mention)
←
Proto-Indo-European *bʰel- (derived)
→
English bluet (mention)
→
Esperanto blua (mention)
→
Haitian Creole ble (derived)
→
Romanian bleu (borrowed)
→
Vietnamese lơ (borrowed)
→
Volapük blöv (borrowed)