Deep water blue: the deep (blue) color associated with water and with the rainy sky · Dyed or colored blue · Used as an epithet of sea and river deities or things connected with them
köken: Dissimilation of *caeluleus, derived from caelum (“sky, heaven”) + -uleus (diminutive suffix). However, in Classical Latin the word is attested as denoting the color of the rainy sky and that of deep water, and was on the whole associated with water.
köken: Mongolian Cyrillic ᠬᠥᠬᠡ (köke) хөх (xöx) Inherited from Classical Mongolian ᠬᠥᠬᠡ (köke), from Middle Mongol ᠬᠥᠬᠡ (köke), from Proto-Mongolic *köke, compare Buryat хүхэ (xüxe). Borrowed from or cognate with Proto-Turkic *kȫk; compare Turkish gök and Evenki куку (kuku, “sea-coloured”). For the figurative sense, compare Kazakh көк жамбас (kök jambas).