G5191
ὑακίνθινος
dark blue
ὑακίνθινος, -η, -ον (ὑάκινθος), [in LXX for תַּחַשׁ, תְּכֵלֶת ;] of hyacinth, hyacinthine (see: ὑάκινθος), "doubtless meant to describe the blue smoke of a sulphurous flame" (Swete): Rev.9:17 (Hom., Eur., al.).† (AS)
The KJV translates G5191 in the following manner:
jacinth (2x)
Full Thayer's lexicon entry
ὑακίνθινος — hyakínthinos
ὑακίνθινος ὑακινθινη, ὑακίνθινον (ὑάκινθος), of hyacinth, of the color of hyacinth, i. e. of a red color bordering on black (Hesychius ὑακινθιον. ὑπομελανιζον): Rev 9:17 (Homer, Theocr, Lucian, others; the Sept.).
1 occurrence