Utilitarian Pang Sky

Latin ūtilitās, usefulness — adjectival suffix -ian. As a color modifier, utilitarian implies a clear-and-purpose-fit-and-stripped-down quality, the crisp color of Shaker-and-Quaker anti-ornamental functional-and-no-frills craft tradition. Sits at the crisp-and-functional end of the grid, parallel to functional and workmanlike in usage.

Middle English pang, sudden-sharp-pain. As a color modifier, pang implies a sudden-and-piercing-and-sharp quality, the visual register of Petrarchan-sonnet-and-courtly-love-pang hand-sudden-and-piercing-and-sharp Petrarchan-sonnet-and-courtly-love-and-troubadour-lyric panged-and-sudden-and-piercing-and-sharp surfaces under Petrarchan-sonnet-and-courtly-love-and-troubadour-lyric pierced-and-yearning-and-stricken candlelit-poet-light. Sits at the modifier-and-mood end of the grid, parallel to ache and throb in usage.

The blue of a clear sky at noon — produced by Rayleigh scattering, the preferential dispersion of shorter wavelengths through atmospheric molecules. Air itself is colorless; the color we see is sunlight scattered toward our eyes by every cubic kilometer above. The reference shade is mid-latitude noon under a high pressure system: a clean, slightly green-shifted blue with the luminous depth of light scattered across an entire hemisphere of air.