smalt-blue

In the glades rose innumerable spears of purple half-opened bluebells; the eye ranged over an anemone-dotted sward in this direction; over clusters of smalt-blue dog violets in another.

Mrs. Warren's Daughter A Story of the Woman's Movement Harry Hamilton Johnston 1892

The primary is orange, the smaller star smalt-blue (see Plate 3).

Half-hours with the Telescope Being a Popular Guide to the Use of the Telescope as a Means of Amusement and Instruction. 1862