Plain Agora Lagoon

Latin planus, flat, level — used as a color modifier since the medieval period for hues that read as undecorated and direct. Plain white, plain blue: moderate saturation, no shift, no surface effect. Sits in the crisp-bucket center, with the implication of restraint rather than absence.

Greek agora, Greek-marketplace. As a color modifier, agora implies a Greek-and-Athens-marketplace quality, the visual register of Athenian-and-Spartan-Agora hand-built marketplace-and-civic-meeting-square agora-and-stoa-and-bouleuterion classical-Greek architectural surfaces under Athenian-Agora-and-Spartan-Lacedaemon classical light. Sits at the modifier-and-architecture end of the grid, parallel to forum and stoa 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.