Archil Lake Pigment

Description

Archil is a soft, pink pigment derived from lichen dyes, most notably Roccella tinctoria and related species. By extracting the dye orcein from these lichens and laking it with alumina, we create Archil Lake, a delicate pink pigment with subtle lavender undertones.

This pigment is transparent, moderate in tinting strength, and produces gentle washes of color, making it especially suited for watercolor, tempera, and manuscript illumination. Its hue is unique among historical pinks, softer and cooler than madder lakes, with a restrained elegance reminiscent of soft textiles and illuminated parchment.

History

Archil has been used for centuries, especially in the Mediterranean and Europe. In the medieval and Renaissance periods, it was a common manuscript pigment and fabric dye. Its name derives from the Italian oricello or oricello rosso, referring to its lichen origins. In the pictured artwork of the Virgin and Child from the Book of Kells, Archil Lake is used for the purple decoration throughout and creates the beautiful soft violet unlike any other.

The dye was highly valued in Florence, where families like the Medici profited from its trade. Lichen based dyes were often fermented with ammonia (historically from stale urine) to develop the color, a process that fascinated alchemists and dyers alike.

While fugitive compared to mineral pigments, Archil's unique hue secured its place in historical palettes. It appears in medieval manuscript illuminations, Renaissance paintings, and decorative arts, often used in glazes and delicate passages where permanence was less critical.

Today, Archil is primarily studied and reproduced for historical authenticity, conservation work, and artists seeking the rare beauty of natural dye based lakes.

Pigment Information

Pigment Type: Organic Lake Pigment (from lichens, chiefly Roccella tinctoria)
Source: Fermented extract from Roccella tinctoria
Origin: Mediterranean and Atlantic coasts (natural)
Suitable Mediums: Watercolor, Tempera, Fresco, Mixed Media (not recommended for oil due to solubility and fading)
Lightfastness: Poor to Moderate (fugitive in strong light)
Opacity: Transparent
Other Names: Orcein Lake, Orseille, Oricello, Rocella Lake, Litmus Lake (related)
Color Index Code: N/A
Image: Folio 7v of the Virgin and Child in the Book of Kells

Health and Safety

• For art use only. Not for cosmetic, food or children's use.
• Keep out of reach of children and pets. Do not eat, drink or smoke while working.
• Avoid creating or breathing dust. Work in a ventilated area and wear a NIOSH approved dust respirator (P100 or better) when handling dry pigment.
• Wear gloves and eye protection. Wash hands and work surfaces after use, and never rinse pigment into drains.
• Do not spray apply, sand or burn.
• If swallowed or if you feel unwell, contact a poison control center (U.S. 1-800-222-1222) or a doctor.
• Safety Data Sheet available on request.