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).
Avoid adding white to a color to make another. You will end up with a lot of extra ink. Adding black to colors will make what are known as burnt colors. For instance, orange and black make a burnt umber. Mixing a bit of black with red will make a brick like color.