CORRECTED: This is very odd because there is no exact equivalent. Uli [oolee] is used when speaking of a deep blue sea; polū [po-loo] is used when speaking of clothes and eyes. 'Uki 'uki [ookee] is a berry that is used to make blue dye, so sometimes we say this when referring to a blue in general. Nani [nah-nee] is beautiful.
Hawaiian: Beautiful = nani African: there is no such language as "African"
Aloha: maka nani [ma-ka na-nee]
The Hawaiian translation for beautiful is nani.
To say "blue sky" in Hawaiian, you would say "lani ākea."
nani
Puanani
Uliuli (uu-lee-uu-lee)
aloha nani
Pēpē u'i.
Ka pua nani
Nani, u'i, maika'i
nani uli