Quick Definition
ὑακίνθινος, ίνη, ινον Adj dark purple
Strong's Definition
from 5192; "hyacinthine" or "jacinthine", i.e. deep blue
KJV Usage: jacinth
UBS Dictionary of the Greek New Testament
adjc. | -η, -ον | ὑάκινθος
79.37 · Features of Objects · Color
blue pertaining to being the color of the flower hyacinth (see 2.41), probably a shade of blue Since in some languages the flower hyacinth may not be as well known as precious stones such as sapphire and turquoise, it may be possible to render REV 9:17 as ‘blue as sapphire’ or ‘blue as turquoise.’ The justification for this is simply that the Greek term ὑακίνθινος had become primarily a designation for color.
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
ὑακίνθινος, -η, -ov, (ὑάκινθος), of hyacinth, of the color | fully towards one (so even Hom.), to treat shamefully, of hyacinth, i.e. of a red color bordering on black (Hesych. ὑακίνθινον - ὑπομελανίζον) : Rev. ix. 17 (Hom., Theoer., Leian., al.; Sept.).
Mounce Concise Greek Dictionary
ὑακίνθινος hyakinthinos 1x
hyacinthine, resembling the hyacinth in color, dark blue, Rev. 9:17*
Abbott-Smith Greek Lexicon
ὑακίνθινος, -η, -ον
(< ὑάκινθος), [in LXX for תַּחַשׁ, תְּכֵלֶת ;]
of hyacinth, hyacinthine (v.s. ὑάκινθος), "doubtless meant to describe the blue smoke of a sulphurous flame" (Swete): Re 9:17 (Hom., Eur., al.).†
Moulton & Milligan — Vocabulary of the Greek NT
ὑακίνθινος. Tn its only occurrence in the NT, Rev 917, ὑακίνθινος appears to denote a dusky blue colour as of sulphurous smoke (cf. πύρινος and θειώδης in the context). The adj. is found in PSI III. 183° (a.p. 484) διάλιθον διαφόρων ὑακ[ινθίνων Kal πιναρίων.
Liddell-Scott-Jones — Greek-English Lexicon
ὑακίνθινος (huakinthinos) — dark blue. ὑᾰκίνθῐνος [ῠ], η, ον, hyacinthine, ἄνθος [Refs 8th c.BC+]; φύλλα [Refs 3rd c.BC+]; blue, θώρακες [NT+1st c.AD+]; lana, Codex Just.[Refs]; λίθοι [Refs 5th c.AD+]