🔼The name Hamran in the Bible
The name Hamran is one of quite a few names that are spelled with the letter ר (resh) in Chronicles, but with a ד (daleth) in other books of the Bible.
It's clear that the Hebrew letters ר and ד show some similarity but it's highly unlikely that these differences emerged because professional Hebrew scribes (who knew their Scriptures by heart) mistook one for the other. Much more likely is their origin in a literary ploy with which the author of Chronicles preserved information but which is unfamiliar to us.
🔼Etymology of the name Hamran
The name Hamran appears to derive from the root group חמר (hmr), with a final nun perhaps as an intensifier:
For a meaning of the name Hamran, Jones' Dictionary of Old Testament Proper Names proposes Intensely Red.