Archroma, a global leader in specialty chemicals towards sustainable solutions, and Stony Creek Colors (“Stony Creek”), a trusted manufacturer of traceable natural indigo dyes, today announced that they have entered a strategic partnership to produce and bring to the market Stony Creek’s IndiGold™ high-performance plant-based pre-reduced indigo at scale.

Stony Creek extracts its dye from proprietary Indigofera plant varieties grown in partnership with family farms as a regenerative rotational crop.

Stony Creek Colors developed the new IndiGold™ concept as the world’s first pre-reduced natural indigo dye, which was then developed with Archroma to offer the first ever plant-based alternative to synthetic pre-reduced indigo. The dyestuff will be sold as a 20% concentration in a soluble liquid form that displays similar performance to comparable synthetic indigo products available on the market.

Stony Creek Colors evolved into an innovative leader in plant-based indigo due to its complete development of an improved agricultural value chain, from seed breeding and production to biomass harvest and extraction. The company has been selling its US grown indigo to denim mills since 2015.

From the field to the plant: Shrubs of Indigofera US-grown by Stony Creek Colors (photo: Stony Creek Colors)

The pre-reduced plant-based indigo partnership took root in 2020 when Stony Creek was looking to work with like-minded partners to produce the new dyestuff at scale. Archroma emerged as the ideal partner as the company is well known for its expertise in indigo manufacturing and application, as well as for its commitment to transform the denim industry towards creating better blue jeans.

Archroma continuously introduces eco-advanced indigo innovation such as the first ever aniline-free* synthetic pre-reduced indigo or the Archroma x CleanKore technology for aniline-free* potassium permanganate-free* spray with no laser booster needed for white abrasion.

Archroma immediately offered to support the idea of Stony Creek Colors with extensive pilot scale manufacturing trials and engaged with its network of denim machinery manufacturers to test the first samples in industrial conditions. The trials showed excellent coloration and the typical indigo wash down, as with synthetic indigo. Archroma will produce the first batches of IndiGold™ in Salvatierra, Mexico, and has other locations where the product could be made. The company will support Stony Creek Colors through its manufacturing and logistics capabilities, and its expertise in denim dyeing with customers using pre-reduced indigo.

From the field to the plant: Archroma’s indigo plant in Salvatierra, Mexico (Photo: Archroma)

While this development was underway, the global innovation platform Fashion for Good selected Stony Creek Colors as an innovator in its global Innovation Program. The program connects brands with innovators to work together to test, validate and ultimately scale disruptive innovations in the fashion industry to drive positive impact. Through the program, Fashion for Good facilitated a collaboration between brand partner Levi Strauss & Co. and Stony Creek Colors which was announced in December 2021. The partners will pilot the use of IndiGold™ in denim mills at scale, with the goal of unlocking key learnings around shade application and other efficiencies of this new dyestuff.

“For years our consistent powder and paste products have been able to fill a void in the marketplace for denim mills needing verifiable plant-based indigo. We, along with many in the industry, see IndiGold™ as the holy grail for indigo dyeing and are ecstatic to now be bringing it to life with such a reputable partner as Archroma. The coupling of our two technologies allows us to fulfill the ultimate desire from our customers for an easy-to-use, pre-reduced liquid formulation that stems from a 100% plant-based supply”, said Sarah Bellos, CEO and Founder of Stony Creek Colors

“I am very proud that Archroma supports Stony Creek’s project. We shared the same vision that plant-based pre-reduced indigo can be scaled up and color the nature-friendly collections that denim brands & retailers have been dreaming of, and we are pleased to help bring it to the market,” comments Heike van de Kerkhof, CEO of Archroma.

* Below limits of detection according to industry standard test methods.
IndiGold™ is a trademark of Stony Creek.
® Trademarks of Archroma registered in many countries.
© 2022 Archroma and Stony Creek

Press Materials

Media Relations

Marilyn Chua



Notes For Editors

About Archroma

Archroma is a global, diversified provider of specialty chemicals serving the branded and performance textiles, packaging and paper, and coatings, adhesives and sealants markets.

Headquartered in Pratteln, Switzerland, Archroma operates with more than 4,500 employees located in 42 countries and with over 30 production sites.

Archroma is passionate about delivering leading and innovative solutions, enhancing people’s lives and respecting the planet. The company is committed to the principles of "The Archroma Way to a Sustainable World: Safe, Efficient, Enhanced. It's our nature!"; an approach reflected in its innovations, world-class quality standards, high service levels and cost-efficiency.

About Stony Creek Colors

Stony Creek Colors is a natural colorant manufacturer based in Tennessee, USA and is a 2021 Fashion for Good innovator. The company creates traceable, plant-based dyes that enrich farm ecosystems, fight climate change, and empower people with safer, cleaner color.

Since the company’s inception in 2012, they have developed proprietary seed genetics and extraction processes as well as strategic farm partnerships to provide customers with a fully transparent plant-based indigo supply chain from seed, to farms, to factory. Stony Creek Colors has received certification from the USDA Biopreferred program for 100% bio-based products and they are Zero Discharge of Hazardous Chemicals (ZDHC) compliant. IndiGold™ is their newest product development.

Media Relations: Devon Murrie at

Affiliations & memberships

Archroma are proud members and/or partners with the following organizations

View All »