Open Prow Ocean

Old English open, unobstructed — used as a color modifier since the eighteenth century for hues that read as airy or uncrowded. Open blue, open green: moderate saturation combined with optical spaciousness, the slight visual breath of a hue that doesn't crowd the surface it covers. Sits at the crisp-bucket center alongside clear.

Old French proue, ship's-front. As a color modifier, prow implies a ship's-front-and-figurehead quality, the visual register of Royal-Navy-and-Tall-Ship-Prow hand-carved ship's-front-and-figurehead prow-and-cutwater-and-bowsprit maritime-architecture surfaces under tall-ship-prow-and-figurehead maritime-headway light. Sits at the modifier-and-nautical end of the grid, parallel to bow and hull in usage.

The body of saltwater that covers seventy percent of Earth's surface — a single connected mass divided by convention into Atlantic, Pacific, Indian, Southern, and Arctic. The color refers to the average reflectance of mid-depth temperate ocean: a saturated, slightly green-shifted deep blue with the optical depth of a body of water that absorbs all light below the photic zone. Deeper than mediterranean, cooler than peacock.