Ironclad Pollux Royal

English compound iron + clad — referring to the 19th-century USS-Monitor and CSS-Virginia iron-armored warships. As a color modifier, ironclad implies a saturated-and-armored-and-impenetrable quality where the hue carries the visual weight of forged-iron armor-plate. Sits at the bold-and-fortified end of the grid, parallel to fortified and armored.

Greek Πολυδεύκης, Gemini-twin-and-immortal-boxer. As a color modifier, pollux implies a Gemini-twin-and-immortal-brother quality, the visual register of Gemini-Pollux-and-Castor-twin hand-Gemini-twin-and-immortal-brother Gemini-Pollux-and-Castor-twin-and-Argonaut pollux-and-Gemini-twin-and-immortal-brother surfaces under Gemini-Pollux-and-Castor-twin-and-Argonaut spring-Gemini-and-Bortle-1-sky stellar-twin-light. Sits at the modifier-and-cosmic end of the grid, parallel to castor and spica in usage.

The blue of European royal court dress and regalia from the late seventeenth century forward — the color of British peers' robes, French royal sashes, the lining of the crown-jewel cases. The color refers to a saturated, slightly violet-shifted blue with the matte finish of velvet or melton wool dyed to maximum intensity: deeper than cornflower, warmer than ultramarine, with the heraldic weight of a color reserved for monarchs and the official Crown.