Dependable Hyssop Sky

Latin dē-pendere, to hang from — adjectival suffix -able. As a color modifier, dependable implies a clear-and-trustworthy-and-consistent quality where the hue carries the visual register of consistently-performing-and-counted-on design-element. Sits at the crisp-and-honest end of the grid, parallel to reliable and trustworthy in usage.

Hebrew ēzōb, Biblical-purifying-herb. As a color modifier, hyssop implies a Biblical-purifying-herb-and-monastic-physic-garden quality, the visual register of monastic-physic-garden-and-Biblical-hyssop hand-Biblical-purifying-herb-and-monastic-physic-garden monastic-physic-garden-and-Biblical-hyssop-and-Cluniac-cloister hyssop-and-Biblical-purifying-herb surfaces under monastic-physic-garden-and-Biblical-hyssop-and-Cluniac-cloister Cluny-and-Saint-Gall-physic-garden monastic-physic-light. Sits at the modifier-and-flavor end of the grid, parallel to savory and balm 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.