Blu is a distinctive boys' name in England & Wales, ranking #1380 in 2015 with 18 recorded births. The name reached its all-time peak in 2019 with 39 births ranking #798. Since 1996, the popularity has increased by 500.0%. In 2015, approximately 1 in every 18,513 boys born was named Blu. STABLE Recent data shows the name is currently stable.