1 Coil (chemistry), a tube used to cool and condense steam from a distillation.  Coil spring, used to store energy, absorb shock, or maintain a force between two surfaces.
Umber RGB Color Code: #635147. The hexadecimal RGB code of Umber color is #635147. This code is composed of a hexadecimal 63 red (99/256), a 51 green (81/256) and a 47 blue component (71/256). The decimal RGB color code is rgb(99,81,71).
Umber was one of the first pigments used by man; it is found along with carbon black, red and yellow ocher in cave paintings from the neolithic period. Dark brown pigments were rarely used in Medieval art; artists of that period preferred bright, distinct colors such as red, blue and green, rather than colorless colors.he color shown in the box at right is one of the many commercial varieties of umber, from the ISCC-NBS color list: ISCC-NBS Dictionary of Color Names (1955)--Color Sample of Umber (color sample #61) . Limonite, or hydrated iron oxide, is the basic ingredient of the earth pigments ocher, sienna and umber.