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About these coordinates About these coordinates
— Color coordinates —
Hex triplet #6082B6
RGBB (r, g, b) (96, 130, 182)
HSV (h, s, v) (216°, 47%, 71%)
B: Normalized to [0–255] (byte)
Wine grapes with glaucous coating
Glaucous Gull
Plums with some glaucous coating visible
Cryptocarya glaucescens with a glaucous under-leaf

Glaucous (from the Latin glaucous, meaning "bluish-grey or green", from the Greek glaukos) is used to describe the pale grey or bluish-green appearance of the surfaces of some plants, as well as in the names of birds, such as the Glaucous Gull (Larus hyperboreus), Glaucous-winged Gull (Larus glaucescens), Glaucous Macaw (Anodorhynchus glaucus), and Glaucous Tanager (Thraupis glaucocolpa). The term glaucous is also used botanically as an adjective to mean "covered with a greyish, bluish, or whitish waxy coating or bloom that is easily rubbed off" (e.g. glaucous leaves).

The first recorded use of glaucous as a color name in English was in the year 1671. [1]



The epicuticular wax coating on mature plum fruit gives them a glaucous appearance. Another familiar example is found in the common grape genus (Vitis vinifera). Some cacti have a glaucous coating on their stem(s). Glaucous coatings are hydrophobic, prevent wetting by rain, and hinder climbing of leaves, stem or fruit by insects. On fruits, glaucous coatings may function as a deterrent to climbing and feeding by small insects in favor of increased seed dispersal offered by larger animals such as mammals and birds.

See also


  1. ^ Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill Page 195; Color Sample of Glaucoous Blue: Page 95 Plate 36 Color Sample I3 (The color identified as "Glaucous Blue" in this color sample matches the color in the color display above.)

External links


1911 encyclopedia

Up to date as of January 14, 2010

From LoveToKnow 1911

GLAUCOUS (Gr. yXauuos, bright, gleaming), a word meaning of a sea-green colour, in botany covered with bloom, like a plum or a cabbage-leaf.

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