Blu is a distinctive boys' name in England & Wales, ranking #1197 in 2025 with 24 recorded births. The name reached its all-time peak in 2019 with 39 births ranking #798. Since 1996, the popularity has increased by 700.0%. In 2025, approximately 1 in every 11,331 boys born was named Blu. STABLE Recent data shows the name is currently stable.