Plumb Set Teal

Latin plumbum, lead — referring to the lead-weighted plumb-line of pre-modern carpentry. As a color modifier, plumb implies a clear-and-vertical-true quality where the hue carries the visual register of gravity-aligned-and-perfectly-vertical surface. Sits at the crisp-and-balanced end of the grid, parallel to level and squared in usage.

Old English settan, to put-down. As a color modifier, set implies a sunset-and-descending quality, the visual register of clear-sky western-horizon sunset-and-moonset descending-celestial-body atmospheric Rayleigh-scattered Belt-of-Venus orange-and-violet surfaces under descending-horizon-and-sunset light. Sits at the modifier-and-time end of the grid, parallel to rise and eve 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.