Sonorous Ray Ultramarine

Latin sonōrus, resounding — derived from sonus (sound). As a color modifier, sonorous implies a saturated-and-richly-vibrating quality where the hue carries the deep-resonance visual register of a cathedral-organ-pipe low-note. Sits at the bold-and-resonant end of the grid, parallel to resonant and deep in usage.

Latin radius, spoke-or-beam. As a color modifier, ray implies a radiant-and-spoke-of-light quality, the visual register of Bernini-Gloria-and-Baroque-altarpiece-ray hand-radiant-and-spoke-of-light Bernini-Gloria-and-Baroque-altarpiece-and-Counter-Reformation rayed-and-radiant-and-spoke-of-light surfaces under Bernini-Gloria-and-Baroque-altarpiece-and-Counter-Reformation gilded-spoke-and-altar-and-cathedral-dome heavenly-light. Sits at the modifier-and-mood end of the grid, parallel to beam and gleam in usage.

The pigment ground from lapis lazuli — the Afghan mineral imported through Venice in the late Middle Ages, more expensive by weight than gold during the Renaissance. The color refers to a freshly mixed ultramarine pigment in linseed oil: a saturated, slightly violet-shifted deep blue with the matte finish of micron-ground rock. Deeper than cobalt, cooler than royal, with the art-historical weight of the blue Vermeer reserved for Mary's robe.