Italian blu

← French bleu (borrowed)

← Middle French bleu (derived)

← Old French blou (derived)

← Proto-Germanic *blēwaz (derived)

← Proto-Indo-European *bʰl(e)h₁uos (derived)

← Proto-Indo-European *bʰlewas (mention)

← Proto-Indo-European *bʰel- (mention)

← Italian biavo (doublet)

→ Italian sbiadire (cognate)

→ Italian blucerchiato (compound)

→ Italian biavo (mention)

→ Italian rossoblù (compound)

→ Maltese blu (derived)