The Fascinating Story of Pigment PB29 in Fine Art
Essential pigments every artist should know – PB29 (Ultramarine Blue)
Few pigments in fine art carry the mystique and prestige of PB29 (Ultramarine Blue). From its origins in ancient lapis lazuli to modern professional ranges, ultramarine bridges centuries of artistic tradition, chemistry, and creative expression.
A Colour Worth Its Weight in Gold
Originally derived from the semi-precious stone lapis lazuli, ultramarine was one of the most prized pigments in history, once valued even more than gold. Mined primarily in Afghanistan’s remote Badakhshan mountains, lapis lazuli was painstakingly ground to produce a pure, deep blue pigment. Its rarity made it reserved for the most prestigious artworks, and during the medieval and Renaissance periods, artists often used it only for key focal elements, such as the robes of the Virgin Mary, emphasising their importance through colour alone.
The exclusivity of ultramarine influenced patronage, art economics, and artistic technique for centuries. Only the wealthiest commissions could afford the pigment, so artists planned compositions carefully to maximise its use. By the 19th century, advances in chemistry allowed for the creation of a synthetic ultramarine, chemically identical to the natural mineral. This breakthrough made the pigment accessible to artists while retaining the luminous depth that has inspired painters for over 600 years. Today, ultramarine continues to captivate for its granulating textures in watercolours, layering potential in oils, and versatile glazing in acrylics, bridging centuries of artistic tradition with modern creativity.
The Chemistry Behind Ultramarine
Ultramarine owes its remarkable colour to a sodium aluminosilicate lattice containing sulphur, producing a deep blue with subtle reddish undertones. This structure gives the pigment several qualities prized by professional artists:
- Granulation in watercolour: Creates natural textures in skies, water, and atmospheric effects.
- Exceptional lightfastness: Maintains vibrancy over decades, even under strong light.
- Mixing stability: Predictable interactions with other pigments allow muted greens, purples, and naturalistic shadows.
- Transparency for washes and glazes: Ideal for layering in oils, acrylics, and watercolour.
These properties make ultramarine both reliable and expressive, whether applied in bold impasto strokes or delicate washes.
Why Artists Love Ultramarine
Artists are drawn to ultramarine for its aesthetic depth and versatility:
- Adds richness and atmosphere to skies, seascapes, and shadows.
- Balances colour mixes with its slightly reddish undertone, warming greens and purples naturally.
- Encourages textural experimentation in watercolour granulation or oil/acrylic glazing.
- Provides consistent results across mediums, giving artists confidence in their work.
Ultramarine’s enduring appeal is reflected in the works of renowned painters across centuries. From Titian layering oils to create luminous depth, to Turner capturing atmospheric skies, it has conveyed emotion, drama, and subtle nuance. Other masters – including Giotto, Fra Angelico, Leonardo da Vinci, Michelangelo, Raphael, Van Eyck, Constable, Monet, Van Gogh, Kandinsky, Rothko, and Hockney – have each used ultramarine’s unique qualities in fresco, oil, watercolour, and acrylic. Their applications demonstrate the pigment’s versatility: whether highlighting sacred figures, enhancing natural landscapes, or creating expressive abstracts, ultramarine continues to inspire technical mastery and creativity.
PB29 in Daler-Rowney Colours
PB29 is a cornerstone pigment in Daler-Rowney professional ranges, offering depth, stability, and mixing versatility. Artists can combine it with other pigments to create a wide spectrum of naturalistic and imaginative colours:
- Natural greens: PB29 + PY3 Cadmium Yellow or PY43 Yellow Ochre = earthy or vibrant greens, perfect for foliage, landscapes, and botanical work.
- Muted purples: PB29 + PR108 Cadmium Red = soft purples suitable for florals, shadows, and evening skies.
- Warm greys and neutrals: PB29 + PW6 Titanium White = delicate greys and softened tones for skies, distant landscapes, and subtle shading.
- Deep teals and aquas: PB29 + PG7 Phthalo Green = rich blues and greens for water, tropical foliage, or contemporary abstracts.
- Layered atmospheres: Using PB29 as a transparent base in glazes or watercolour washes enhances depth and allows underlying colours to glow.
PB29’s granulation, mixing stability, and transparency make it invaluable for both precision and creative exploration, allowing artists to unlock a broad range of effects across oil, acrylic, and watercolour.
At Daler-Rowney, PB29 features in Georgian Oils, System3 Acrylics, and Aquafine Watercolour, giving artists confidence in its vibrancy, lightfastness, and reliability. From muted landscapes to expressive abstracts, ultramarine remains a cornerstone of every professional palette.
Key Tips for Using Ultramarine
- Mix carefully – its reddish undertone affects green and purple mixtures.
- Layer strategically – ideal for glazes, washes, and shadows to build depth.
- Combine with complementary pigments – warm yellows for natural greens, reds for muted purples.
PB29 Isn’t Just a Pigment
Ultramarine is a bridge between centuries of art history and modern creativity. At Daler-Rowney, it continues to be celebrated for its brilliance, stability, and versatility, giving artists the tools to bring their vision to life in oil, acrylic, and watercolour.
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