Plain Quay 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.

Old French quai, wharf. As a color modifier, quay implies a stone-built-harbor quality, the visual register of Cornish-and-Mediterranean stone-built fishing-harbor-and-trading-port quay-side stone-paved-and-iron-bollard surfaces in early-morning Mediterranean-and-Cornish-fishing-harbor light. Sits at the modifier-and-place end of the grid, parallel to wharf and jetty 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.