Blu is a distinctive girls' name in England & Wales, ranking #4201 in 2025 with 5 recorded births. This places Blu in the bottom 45% of ranked UK girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2016 with 9 births ranking #2757. In 2025, approximately 1 in every 50,656 girls born was named Blu. STABLE Recent data shows the name is currently stable.