- Used in ancient and imperial China of the Han Dynasty, suitable for all techniques.
- Chemical description: Ceramic pigment, copper barium silicate, CuOBaO4SiO2
- Lightfastness – medium: 8 (1 is bad, 8 is best)
- Lightfastness – thinned: 8 (1 is bad, 8 is best)
- Lightfastness – concentrated: 8 (1 is bad, 8 is best)
- Suitability: Acrylics, Ceramic, Lime / Fresco, Oil, Tempera, Watercolor / Gouache
- Colors: Blue