Effective Ventus Teal

Latin effectīvus, productive — adjectival suffix -ive. As a color modifier, effective implies a clear-and-purpose-achieving quality where the hue carries the visual register of successful-task-completion design-element. Sits at the crisp-and-functional end of the grid, parallel to practical and useful in usage.

Latin ventus, wind. As a color modifier, ventus implies a Latin-wind-and-Roman-Aeolus-wind quality, the visual register of Roman-Aeolus-and-Anemoi-ventus hand-Latin-wind-and-Roman-Aeolus-wind Roman-Aeolus-and-Anemoi-ventus-and-Boreas-Notus-Eurus-Zephyrus ventus-and-Latin-wind surfaces under Roman-Aeolus-and-Anemoi-ventus-and-Boreas-Notus-Eurus-Zephyrus Aeolian-and-Vergilian-pastoral Roman-wind-light. Sits at the modifier-and-Latin end of the grid, parallel to ignis and unda 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.