The Global Pigment Shortage: How Climate Change Is Reshaping Mural Colours

The global pigment shortage isn’t something happening somewhere else anymore. It’s in studios right now. Back in 2021, a major Dutch industrial paint maker described the situation as “complete chaos” as blues became scarce, not just in studios but across the coatings industry. Muralists can’t count on their usual palette anymore. Climate change and art aren’t separate topics. Mining gets disrupted, regulations get heavier, supply chains break. If you’re commissioning a large outdoor piece, here’s the thing: your artist might not be able to get the exact colors you want, and if they can, those materials might not last the way they used to.

The Global Pigment Shortage: A Perfect Storm of Climate and Supply Disruptions

How Climate Change Drives the Global Pigment Shortage

Summer 2021 was rough. In western Canada, extreme heat, drought, and wildfires damaged crops and contributed to higher commodity and food prices, while climate‑driven disasters more broadly disrupted energy and trade flows. Artists felt this through higher prices and shortages of oil‑based primers, binders, and coatings as the wider paint and coatings industry grappled with climate‑ and pandemic‑driven supply shocks and raw‑material constraints.

Golden Artist Colors has described ongoing supply chain issues across the board, affecting acrylic resins, linseed oil, pigments, packaging, and staffing. The company later confirmed in a product‑discontinuation update that key Quinacridone Gold and Brown pigments were no longer available, forcing it to discontinue several popular colors. During this period, shortages of highly demanded blue pigments, including Indanthrone Blue and Ultramarine Blue, made these hues especially harder and more expensive for muralists to source for durable outdoor work.

Industrial Accidents Amplify Scarcity

In March 2021, a production incident at BASF’s Ludwigshafen site triggered force‑majeure declarations and disrupted output of important intermediates used in polymer and resin manufacturing across Europe. Because these precursors underpin many paint and coating systems, the supply shock rippled through materials markets well beyond the region. Climate scientists expect many types of extreme weather and related disruptions to become more frequent in a warming world, which means artists and manufacturers are likely to face similar shocks again.

Why Traditional Pigments Are Failing

Titanium Dioxide: The White Under Pressure

Thousands of paints use titanium dioxide as their base. Right now it is getting squeezed by tight spot supply and repeated price hikes from major producers, as documented in recent titanium dioxide price‑increase notices. This has made TiO₂ more expensive and more volatile for downstream users. 

Muralists need titanium white; nothing else gives the same combination of opacity, brightness, and mixing power, so rising TiO₂ costs hit them directly. Prices have jumped hard over the last few years, and that volatility is now embedded across sustainable art‑supply markets.

Cadmium Pigments: Beautiful But Problematic

Cadmium yellows, oranges, and reds have this intensity synthetic versions just can’t match. But there’s a catch conservators are documenting more clearly now.

Look at Picasso’s 1907 painting Femme. One yellow area used cadmium sulfide. It’s brownish-yellow now. Another formula in the same painting? Still vibrant. You can’t predict it. Joan Miró’s murals show the same problem. Research found discoloration and chalking in his cadmium yellow paints. The intended color balance changed. Van Gogh, Seurat, Matisse all created works that have this nasty “chalking” effect now. Researchers find cadmium sulfate and other white alteration products in the chalky surface layers of these cadmium yellow paints, formed over time under light and environmental exposure.

Minnesota passed a law in 2023 restricting lead and cadmium in certain consumer products, including art materials. It effectively limits the retail sale of cadmium-containing paints and inks, making them much harder to buy in stores there. The EU looked at doing something similar in 2013 but decided against it after scientists reviewed the data. Still, regulations keep putting pressure on ethical art materials availability and price.

Natural Ultramarine: An Ancient Blue Under Threat

Afghanistan’s Sar-i Sang mines have supplied high‑quality lapis lazuli for thousands of years and remain a key source of the world’s finest material. In the Middle Ages, Europeans paid more for this pigment than gold, and getting it “across the sea” (ultra mare) was incredibly difficult. Medieval artists, including nuns and scribes, valued it so highly that they are known to have licked their paintbrushes to shape the tip. We know this because lapis lazuli particles have been found embedded in the dental calculus of a medieval manuscript illuminator.

Afghanistan’s political situation makes mining and distribution complicated now. Synthetic ultramarine exists, invented back in the 1800s, costs way less. But it has the same weakness the natural version has: acid destroys it. In cities where acid rain happens, ultramarine murals can lose their blue color completely and turn white. That’s a problem for eco-friendly murals in polluted locations.

What the Global Pigment Shortage Means for Outdoor Murals

The Durability Question

UV light destroys some pigments fast and barely touches others. Mural durability in the sun depends heavily on choosing pigments rated for exterior use. The most durable options include earth tones (yellow ochre, raw sienna, burnt umber), quinacridones (magentas, violets, and some reds), phthalocyanines (blue and green), and titanium white, which remains the most reliable white for outdoor work.

Muralists who actually test their work outdoors see huge differences. Colors with excellent ASTM Lightfastness I ratings for indoor use can still fall apart after a year outside without protection. UV intensity matters. So do temperature swings, humidity levels, and air pollution. Lab tests don’t catch everything.

Adapting Palettes to New Realities

When certain pigments become impossible to source or too risky to use, working artists figure it out. Many manufacturers have reduced or discontinued full cadmium ranges, pushing muralists toward newer organic options like pyrrole pigments and bismuth vanadate yellows. These modern alternatives often perform as well as, or better than, traditional cadmiums in outdoor conditions.

Some artists blend their own custom shades using whatever’s available and stable. Others deliberately limit their palettes. Constraints can spark creativity. More artists now choose ethical art materials on purpose. Non-toxic, responsibly sourced pigments. That’s thinking about the future of paint manufacturing.

Knowing which colours work best in different contexts helps you and your artist make better decisions about palettes for projects that need to last.

How Book An Artist Connects You With Material-Conscious Professionals

Finding the right mural artist used to be about matching style and budget. Now you also need someone who understands pigment availability and material longevity. Book An Artist’s network has professionals who lived through 2021’s supply crisis. They understand what’s actually available right now.

These artists know which colors last in your specific climate. They know which pigments meet local environmental regulations. They know how to source sustainable art supplies without sacrificing quality. Commission through Book An Artist and you’re working with someone who can explain modern pigment realities and recommend alternatives that will actually hold up for years.

The platform handles communication, tracks projects, processes secure payments. Understanding the mural design process from beginning to end shows you how professionals think through technical material decisions alongside creative ones.

Looking Forward

The global pigment shortage isn’t temporary. Climate change and art stay connected. Climate disruption, resource limits, regulatory changes keep reshaping what colors exist and what they cost. Artists adapting now will define what public art looks like for the next generation.

If you’re commissioning murals, work with professionals who understand material constraints and can deliver work that lasts. Book An Artist connects you with artists who’ve handled these challenges. They can guide you toward palettes that balance creative vision with practical reality.

The palette of public art is changing. The power of public art isn’t.

Frequently Asked Questions

Why are some colours disappearing or becoming expensive?

The 2021 crisis exposed how fragile the supply chain is:

• Canadian wildfires damaged crops and disrupted petrochemical and linseed oil supplies, pushing up prices for oil-based paints
• A fire at BASF’s Ludwigshafen site disrupted production of key polymer and resin precursors across Europe for months
• Major manufacturers like Golden Artist Colors discontinued entire product lines because pigment and raw-material suppliers failed to deliver consistently
• Late 2021’s “blue paint shortage” occurred when pandemic demand collided with these supply-chain problems
• Political tensions disrupt mining for raw materials like lapis lazuli
• Environmental regulations on heavy metals add compliance costs

Traditional artist pigments get hit hardest. They’re tiny market segments compared to industrial coatings.

Which pigments last longest in sun-heavy regions?

The most durable pigments for outdoor murals are:

• Earth tones: Yellow ochre, raw sienna, burnt umber
• Quinacridones: Magenta, violet, and certain reds
• Phthalocyanines: Blue and green
• Modern alternatives: Pyrrole pigments, bismuth vanadate yellows
• Titanium white: Still the most reliable white for exterior use, despite supply issues

Skip cadmium yellows in humid outdoor conditions. They chalk. Skip ultramarine in polluted areas. Acid sensitivity. Skip fluorescent pigments. They fade fast. Professional exterior paints get tested way beyond standard ASTM ratings. The right pigments can last 30+ years before needing touch-ups.

How do artists adapt when certain colours are unavailable?

Working muralists use several strategies:

• Substitute modern alternatives like pyrrole pigments for cadmiums where appropriate
• Blend custom shades from more stable, readily available pigments
• Work within tighter palettes based on earth tones or cool primaries
• Apply UV‑resistant protective coatings to extend pigment life
• Monitor supply‑chain information to anticipate material shortages

Learning how to work with environmentally conscious practices helps you handle these material changes without losing artistic quality.

What lessons come from historic pigment failures?

Conservation research gives clear warnings:

• Picasso’s Femme (Époque des “Demoiselles d’Avignon”) shows that different cadmium sulfide formulas age unpredictably
• Works by Van Gogh, Seurat, and Matisse show chalking and fading where cadmium yellow pigments have degraded
• Joan Miró’s murals and studio materials demonstrate how cadmium colors can shift over decades
• Medieval manuscripts show that artists have long worked with precious, sometimes toxic materials

These examples guide modern muralists toward more stable formulas that age predictably instead of dramatically changing or breaking down.

How can clients know if an artist understands pigment limitations?

Ask direct questions when you meet:

• Which specific pigments will you use for this project and why those?
• How do they perform in our climate with our pollution levels?
• What happens if a color I want won’t work outdoors?
• Have you changed your palette because of recent supply problems?

Professional artists give straight answers and offer alternatives. They understand creative vision and technical material selection. Platforms like Book An Artist vet professionals to make sure they have this technical knowledge alongside artistic talent.