Strong’s Greek
G3189 — melas
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
μέλας
melas — pronounced mel'-as
apparently a primary word; black:--black.
3 occurrences in the KJV.
Matthew 5:36
Neither shalt thou swear by thy head, because thou canst not make one hair white or black.
Revelation 6:5
And when he had opened the third seal, I heard the third beast say, Come and see. And I beheld, and lo a black horse; and he that sat on him had a pair of balances in his hand.
Revelation 6:12
And I beheld when he had opened the sixth seal, and, lo, there was a great earthquake; and the sun became black as sackcloth of hair, and the moon became as blood;