Trustworthy Helix Peacock

Old English trēow, trust — adjectival suffix -worthy. As a color modifier, trustworthy implies a clear-and-reliable-and-honest quality where the hue carries the visual register of confidence-deserving-and-faithful-performance design-element. Sits at the crisp-and-honest end of the grid, parallel to reliable and dependable 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.

Pavo cristatus, the Indian peafowl whose male displays the most elaborate sexual ornament in birds — a fan of two-meter eyespotted tail feathers in iridescent blue-green. The color is structural, not pigmented: created by interference patterns in the feather barbules. Peacock blue refers to the dominant body color: a saturated, slightly muted teal-blue with the optical depth of structural color. Cooler than persian, warmer than sapphire.