Blu is a distinctive boys' name in United States, ranking #5127 in 2017 with 18 recorded births. This places Blu in the top 36% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2021 with 48 births ranking #2656. In 2017, approximately 1 in every 102,795 boys born was named Blu. FALLING Recent data shows the name is currently falling.