Rei vs Blu

Baby Name Comparison — 2026

Rei

Boy #3,800 Most Popular 1 Syllable

"courtesy, respect, gratitude"

Origin: Japanese kanji 礼

Japanese American Brazilian

✓ All Clear

Boy #3,793 Most Popular 1 Syllable

"the color blue, sky"

Origin: Old French 'bleu' via Germanic

American English Italian

✓ All Clear

Rei Rank #3,800

Blu Rank #3,793

Blu is more popular, ranked #3793 vs #3800 for Rei.

Is Rei or Blu more popular?

Blu is more popular, ranked #3793 compared to Rei at #3800 in the United States.

What do Rei and Blu mean?

Rei means "courtesy, respect, gratitude" (Japanese kanji 礼 origin). Blu means "the color blue, sky" (Old French 'bleu' via Germanic origin).

Are Rei and Blu boy or girl names?

Rei is primarily a boy name. Blu is primarily a boy name.