Lucid Aztec Sky

Latin lūcidus, clear / bright — derived from lūx (light). As a color modifier, lucid implies a clear-and-readable quality where the hue is unambiguous and free of optical clutter. Sits at the crisp-and-clear end of the grid, parallel to pellucid and plain in usage.

Nahuatl Aztēcatl, one-from-Aztlán. As a color modifier, aztec implies a Mexica-and-Tenochtitlan-Imperial quality, the visual register of Aztec-Empire-of-Tenochtitlan hand-built basalt-and-obsidian-and-feather-and-codex Aztec-Imperial-and-Mexica-tribute surfaces under high-altitude Tenochtitlan Aztec-Empire central-Mexico mid-altitude light. Sits at the modifier-and-cultural end of the grid, parallel to inca and toltec 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.