Blue is simply the English color word "blue", from the Old French bleu and older Germanic roots, and as a name it carries the mood of the sky, the sea and the music of the blues. It has a long history as a nickname in the American South and West and became a celebrity choice when Beyonce and Jay-Z named their daughter Blue Ivy in 2012. For boys it has edged up from number 3551 in 2000 to number 2602 in 2024 and sits at number 2648 in 2025, with 49 births.