Blue sits next to 3 phonetic neighbors — Lou, Drew, and Bleu are the closest matches by sound. Most share Blue's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"the color blue, sky and sea"
"thankful"
"god of war, justice, and single combat"
"modern invented name"
"rescuer, redeemer"
"air, atmosphere"
"friend to everyone, ally to all"
"son of the grey-haired one"
"battle"
"strong, hardy"
"one who judges, discerning leader"
"modern invented name"
"God smiles"
"battle-ready, martial spirit"
"Akan people of Ghana"
"divine discernment"
"high ground, elevated place"
"son of Japheth, ancestor of Greeks"
"high, enlightened"
"one who builds with stone"
"strength, resolve, hardness (word name)"
Similar sound: These names share phonetic patterns with Blue — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French/Germanic origins, giving them the same cultural heritage as Blue.
Rhythm: Blue is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.