Blu is a rare name used for both girls and boys that has climbed to its highest level yet, peaking in 2021.
Blu is predominantly a boy name. In 2025 it ranked #2,890 among boys (43) and #6,364 among girls (18) — overall #4,906 across all names. The charts below show girls and boys separately.
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 61 | 61 | #6,364 | #2,890 |
| 2024 | 56 | 56 | #5,178 | #3,622 |
| 2023 | 81 | 81 | #4,290 | #2,698 |
| 2022 | 80 | 80 | #3,839 | #3,013 |
| 2021 | 86 | 86 | #3,893 | #2,656 |
| 2020 | 57 | 57 | #4,371 | #3,933 |
| 2019 | 42 | 42 | #7,078 | #4,014 |
| 2018 | 44 | 44 | #7,162 | #3,803 |
| 2017 | 25 | 25 | #14,430 | #4,961 |
| 2016 | 27 | 27 | #8,986 | #5,822 |
| 2015 | 24 | 24 | #10,272 | #6,040 |
| 2014 | 22 | 22 | #10,262 | #6,686 |
| 2013 | 10 | 10 | — | #7,605 |
| 2012 | 17 | 17 | #10,564 | #9,832 |
| 2011 | 12 | 12 | #15,141 | #10,986 |
| 2010 | 7 | 7 | — | #9,824 |
| 2009 | 15 | 15 | #15,553 | #8,378 |
| 2008 | 9 | 9 | #11,748 | — |
| 2006 | 12 | 12 | #17,554 | #9,696 |
| 2005 | 12 | 12 | #13,227 | #11,677 |
| 2004 | 13 | 13 | #16,495 | #8,221 |
| 2003 | 14 | 14 | #14,122 | #7,930 |
| 2002 | 10 | 10 | #9,594 | — |
| 2001 | 6 | 6 | — | #9,392 |
| 2000 | 10 | 10 | #15,388 | #10,550 |
| 1993 | 5 | — | — | #8,845 |
| 1981 | 6 | — | — | #5,563 |
| 1980 | 7 | — | — | #4,989 |
| 1977 | 6 | — | — | #5,196 |
| 1975 | 6 | — | — | #4,859 |
| 1974 | 7 | — | — | #4,229 |
| 1973 | 13 | — | — | #2,731 |
| 1972 | 12 | — | — | #2,834 |
| 1971 | 9 | — | — | #3,395 |
| 1970 | 5 | — | — | #4,798 |