from the GNU version of the Collaborative International Dictionary of English
- adj. Deep blue, like smalt.
Sorry, no etymologies found.
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.
The primary is orange, the smaller star smalt-blue (see Plate 3).