Cyan sits next to 5 phonetic neighbors — Ryan, Sian, and Zion are the closest matches by sound. Most share Cyan's Greek via English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"blue-green color"
"fame, glory"
"little victorious one"
"beloved, cherished"
"full of life"
"might, strength, glory"
"from Doris, sea nymph"
"helmeted chief, armored head"
"night + lake (compound modern meaning)"
"queen, queen mother"
"young cow (term of endearment)"
"creative, melodic invention"
"pledged to God, God is my oath"
"praised, admired"
"daughter of YHWH (the divine name)"
"blue-green color"
"the bright one"
"light of the meadow"
"hazel tree"
"the bright one"
"royal woodland clearing"
Similar sound: These names share phonetic patterns with Cyan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek via English origins, giving them the same cultural heritage as Cyan.
Rhythm: Cyan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.