Hygienic Knight Teal

Greek hygieinós, healthful — derived from Hygieia (goddess of health). As a color modifier, hygienic implies a clear-and-medical-clean quality, the crisp color of Mid-Century-Modern clinical-and-hospital interior-architecture surfaces. Sits at the crisp-and-clean end of the grid, parallel to sanitary and sterile in usage.

Old English cniht, young-man / knight. As a color modifier, knight implies a chivalric-and-armored quality, the visual register of English-Plantagenet-and-French-Capetian hand-forged plate-armor-and-shield-and-lance-and-pennant knightly-and-chivalric surfaces under English-Plantagenet-and-French-Capetian chivalric-armored-knight ceremonial-court light. Sits at the modifier-and-cultural end of the grid, parallel to squire and page 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.