Sterile Vega Teal

Latin sterilis, barren / not-fertile — sharing root with Greek steiros (barren). As a color modifier, sterile implies a clear-and-medical-clean-and-stripped quality, the crisp color of operating-theater surgical-environment white-and-stainless-steel surfaces. Sits at the crisp-and-clean end of the grid, parallel to sanitary and hygienic in usage.

Arabic al-nasr-al-wāqi', the-falling-eagle. As a color modifier, vega implies a brilliant-blue-white-and-summer-zenith quality, the visual register of Lyra-constellation-and-northern-summer-Vega hand-brilliant-blue-white-and-summer-zenith Lyra-constellation-and-northern-summer-and-Bortle-1-sky vega-and-brilliant-blue-white-and-summer-zenith surfaces under Lyra-constellation-and-northern-summer-and-Bortle-1-sky July-and-August-northern-zenith deep-sky-light. Sits at the modifier-and-cosmic end of the grid, parallel to deneb and altair in usage.

Anas crecca, the small dabbling duck whose male in breeding plumage sports a chestnut head crossed by a glossy green-blue stripe. The color refers to that stripe — the iridescent panel just behind the eye: a saturated, slightly muted blue-green with the optical depth of structural color rather than pigment. Cooler than cypress, warmer than cerulean, with the ornithological specificity of a color named for one feather of one bird.