Quiet Nova Sky

Latin quietus, at rest — used as a color modifier since the medieval period for hues that read as restrained. Quiet pink, quiet blue: low saturation combined with optical calmness. Sits across the crisp and hushed buckets where the color is present but doesn't ask for attention.

Latin nova, new-or-newly-bright-star. As a color modifier, nova implies a sudden-bright-and-newly-erupted-and-flaring quality, the visual register of Tycho-Brahe-and-Kepler-supernova-nova hand-sudden-bright-and-newly-erupted Tycho-Brahe-and-Kepler-and-Cassiopeia-A nova-and-sudden-bright-and-flaring surfaces under Tycho-Brahe-and-Kepler-and-Cassiopeia-A late-Renaissance-observatory-and-naked-eye sudden-stellar-light. Sits at the modifier-and-cosmic end of the grid, parallel to flare and spark 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.