Cadmium
Plural: Cadmiums
Cadmium definition
Cadmium pigments are strong, bright, and opaque inorganic colors made from cadmium compounds.
They are especially known for their intense yellows, oranges, and reds, with excellent covering power and good durability.
- Cadmium refers to a family of inorganic pigments based on cadmium sulfide and related cadmium compounds, widely used in artists’ paints because of their high chroma, opacity, and permanence.
Cadmium pigments are available mainly in:
- Cadmium Yellow — a warm, opaque yellow ranging from lemon yellow to deep golden yellow.
- Cadmium Orange — a vivid orange with strong covering power.
- Cadmium Red — an intense warm red, often slightly orange-red, with excellent opacity.
- Cadmium Scarlet — a brighter, more saturated red-orange variation.
Because of their strong opacity and relatively low tinting transparency, cadmium colors are particularly useful for direct painting, highlights, and areas where a solid, luminous color is needed.
Examples
Context
In traditional and contemporary painting, cadmium pigments are considered among the most important high-performance colors. They became widely adopted by artists in the 19th century and replaced many less stable historical pigments.
Although cadmium is a toxic heavy metal in its raw form, modern artist paints are formulated to be safe when handled correctly. Many manufacturers also produce cadmium-free alternatives using synthetic organic pigments, although these may differ in opacity, mixing behavior, and color character.
Core Principles
- Inorganic pigment: Cadmium colors are mineral-based pigments derived from cadmium compounds.
- High opacity: They strongly cover underlying layers, making them ideal for direct and expressive painting.
- High chroma: They produce intense, saturated colors that are difficult to achieve with many traditional pigments.
- Good permanence: Quality cadmium pigments generally have excellent lightfastness and durability.
- Warm color character: Most cadmium colors have a natural warmth, making them valuable in landscapes, portraits, and still life painting.
Derivation
The word cadmium comes from the Latin name cadmia, referring to the mineral calamine (zinc carbonate). The element cadmium was discovered in 1817 by German chemists Friedrich Stromeyer and Karl Hermann. Cadmium pigments began to be commercially produced in the 19th century as stable alternatives to earlier yellow and orange pigments.