Sky blue is the name of a shading that looks like the shade of the sky at twelve. The section for "sky-blue" in Murray's New English Dictionary (1919) reports a first locating of the term in the article on "silver" in Ephraim Chambers'
Cyclopaedia of 1728. In any case, numerous authors had utilized the expression "sky blue" to name a shading before Chambers. For instance, we discover "sky blue" in A Collection of Voyages and Travels (London: Awnsham and John Churchill, 1704), vol. 2, p. 322, where John Nieuhoff portrays certain blossoms: "they are of an exquisite sky blue shading, and yellow in the center". The feeling of this shading may have been first utilized as a part of 1585 of every a book by Nicolas de Nicolay where he expressed "the tulbant of the shipper must be skie hued".
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