Cadmium red is a vibrant, warm red pigment made from cadmium sulfide and cadmium selenide. It is known for its excellent lightfastness, meaning it resists fading when exposed to light. This pigment is commonly used in oil and acrylic paints, providing artists with a rich, opaque color that can be mixed easily with other hues. Due to its bright appearance and durability, cadmium red has been a popular choice among artists since the 19th century. However, it is important to handle it with care, as cadmium is a toxic substance. Many artists appreciate its unique qualities while being mindful of safety precautions.