PB29

Ultramarine Blue

Ultramarinus means beyond the sea. My favorite form of this vivid blue inorganic pigment is heavily granulating reddish French Ultramarine.

1. Code: PB29
2. Chemical names :  complex sulfur-containing sodium-silicate, lapis lazuli, sodium aluminium sulfosilicate (blue shade), sodium aluminium sulfur silicate (red shade);
3. Formula: Na8–10Al6Si6O24S2–4, mostly
4. Permanence: very lightfast,  I (ASTM)
5. Opacity: transparent

• Hex  #120A8F
• RGB (18, 10, 143)
• CMYK (87, 93, 0, 44)
• HSV (244°, 93%, 56%)

PV15

Ultramarine Violet