As explained in the video above, Beyonce and Jay-Z may have named their baby girl Blue Ivy because the word blue has significant meaning for Jay-Z and the Roman numeral IV is an important symbol to both Jay-Z and Beyonce. Jay-Z titled 3 of his albums “The Blue Print” (The Blue Print 1, 2 and 3), and Jay Z and Beyonce have matching IV tattoos on their wedding fingers.
Blue’s middle name, Ivy, is what the Roman numeral IV sounds like when you say the letters out loud. So the meaning of Blue Ivy’s name could be—the fourth blue print, or Blue Print 4.
Blueprint Definition: A blueprint is a type of paper-based reproduction usually of a technical drawing, documenting an architecture or an engineering design.