Lined Helix Lagoon

Old English līne, line / cord — past-participle of line. As a color modifier, lined implies a clear-and-coordinated-and-supported quality where the hue carries the visual register of carefully-lined-and-supported textile-or-print surface. Sits at the crisp-and-finished end of the grid, parallel to trim and coordinated in usage.

Greek ἕλιξ, spiral-or-coil. As a color modifier, helix implies a planetary-nebula-and-spiraling-coil quality, the visual register of Helix-Nebula-and-Eye-of-God hand-planetary-nebula-and-spiraling-coil Helix-Nebula-and-Eye-of-God-and-NGC-7293 helix-and-planetary-nebula-and-spiraling-coil surfaces under Helix-Nebula-and-Eye-of-God-and-NGC-7293 Aquarius-and-Hubble-deep-field planetary-nebula-light. Sits at the modifier-and-cosmic end of the grid, parallel to nebula and corona 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.