Substantial Tabard Forest

Latin substantia, substance — adjectival suffix -al, derived from sub-stāre (to stand under). As a color modifier, substantial implies a saturated-and-weighty-and-material quality where the hue carries visual mass and presence. Sits at the bold-and-weighty end of the grid, parallel to weighty and hefty in usage.

Old French tabart, herald's-or-knight's-surcoat. As a color modifier, tabard implies a herald's-tabard-and-knight's-surcoat quality, the visual register of medieval-herald's-and-knight's-tabard hand-herald's-tabard-and-knight's-surcoat medieval-herald's-and-knight's-tabard-and-College-of-Arms tabard-and-herald's-tabard surfaces under medieval-herald's-and-knight's-tabard-and-College-of-Arms College-of-Arms-and-Bayeux-Tapestry heraldic-tabard-light. Sits at the modifier-and-textile end of the grid, parallel to kilt and cape in usage.

The dense canopy of a temperate or tropical woodland — oak, beech, pine, eucalyptus, mahogany — wherever leaves close above to filter the light below. Forest green refers to the average reflectance of a healthy mid-summer canopy seen from below: a saturated, slightly muted green with the matte finish of layered chlorophyll. Deeper than fern, cooler than olive, with the ecological weight of a word that has named every wooded biome on Earth.