Effective Saturn 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 Saturnus, Roman-god-of-time-and-sixth-planet. As a color modifier, saturn implies a Roman-god-of-time-and-ringed-sixth-planet quality, the visual register of Roman-Saturn-and-Cassini-rings hand-Roman-god-of-time-and-ringed-sixth-planet Roman-Saturn-and-Cassini-rings-and-Saturnalia saturn-and-Roman-god-of-time-and-ringed-planet surfaces under Roman-Saturn-and-Cassini-rings-and-Saturnalia Saturnalia-festival-and-ringed-gas-giant ringed-planet-light. Sits at the modifier-and-zodiac end of the grid, parallel to jupiter and neptune 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.