raw umber

Thân thiện

An artist mixes raw umber with linseed oil on a wooden palette.

Definition

1. Noun:
   • A greenish-brown pigment: "raw umber" refers to a natural brown earth pigment that has a greenish-brown hue. It is composed of iron oxide and manganese oxide and is used in its natural, uncalcined state.

Usage Examples

• Noun:
  • The artist mixed raw umber with white to create a soft, warm gray for the shadows.
  • For the underpainting of the forest scene, she applied a wash of raw umber.

Advanced Usage

• Artistic Context: In painting, "raw umber" is often used for initial sketches, underpaintings, and for creating muted, natural tones. It is valued for its transparency and fast-drying properties.
  • He began the portrait with a monochromatic sketch in raw umber.

Variants and Related Words

• Burnt umber (noun): A pigment made by calcining (heating) raw umber, which changes its color to a warmer, reddish-brown.
  • She used burnt umber for the richer, redder shadows in the composition.

Synonyms

• Earth pigment: A general term for natural pigments derived from colored earth or clay.
• Brown pigment: A broader category describing pigments of brown color.

Related Terms

• Pigment (noun): A substance used for coloring.
• Ochre / Sienna: Other natural earth pigments (yellow ochre, raw sienna, burnt sienna) often used alongside umbers.

Học thuật

Noun

1. greenish brown pigment