רֹאשׁ֖וֹ כֶּ֣תֶם פָּ֑ז קְוּצּוֹתָיו֙ תַּלְתַּלִּ֔ים שְׁחֹר֖וֹת כָּעוֹרֵֽב׃
His head is as the most fine gold, His locks are curled, And black as a raven.
Read kabbalistic (mystical) interpretation of Song of Songs 5:11: and classical mystical sources.