Useful Nymph Teal

Latin ūsus, use — adjectival suffix -ful. As a color modifier, useful implies a clear-and-purpose-serving quality where the hue carries the visual register of helpful-and-supporting design-element. Sits at the crisp-and-functional end of the grid, parallel to practical and serviceable in usage.

Greek νύμφη, nature-spirit-and-young-bride. As a color modifier, nymph implies a nature-spirit-and-grove-and-spring quality, the visual register of Hellenic-nymph-and-grove-and-spring hand-nature-spirit-and-grove-and-spring Hellenic-nymph-and-grove-and-spring-and-Arcadian-pastoral nymph-and-nature-spirit-and-grove surfaces under Hellenic-nymph-and-grove-and-spring-and-Arcadian-pastoral Mediterranean-grove-and-stream dappled-grove-light. Sits at the modifier-and-myth end of the grid, parallel to dryad and nereid 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.