Useful Cloak Lagoon

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.

Old Northern French cloque, bell-or-cape. As a color modifier, cloak implies a heavy-shoulder-mantle-and-bell-shaped quality, the visual register of Anglo-Saxon-and-medieval-cloak hand-heavy-shoulder-mantle-and-bell-shaped Anglo-Saxon-and-medieval-cloak-and-pilgrim-cloak cloak-and-heavy-shoulder-mantle surfaces under Anglo-Saxon-and-medieval-cloak-and-pilgrim-cloak Canterbury-and-Compostela-pilgrimage wool-cloak-light. Sits at the modifier-and-textile end of the grid, parallel to cape and cowl in usage.

A shallow body of saltwater partially or fully enclosed by a barrier — coral atoll lagoons in the Pacific, Venice's Laguna Veneta, the Florida Keys' backcountry. The color refers to the average reflectance of a calm tropical lagoon at midday: a saturated, slightly muted blue-green with the optical clarity of shallow water over white sand. Brighter than reef, cooler than aquamarine, with the postcard weight of a Pacific atoll seen from above.