The Beautiful Colour That Poisoned Everyone

In 1775, a Swedish chemist named Carl Wilhelm Scheele created a vivid new green pigment by combining arsenic compounds with copper salts. The colour was extraordinary: bright, rich, almost glowing, and unusually resistant to fading. He called it Scheele’s Green.

It was also lethally toxic. Every surface it coated became a slow‑release delivery system for arsenic.

Within decades, it was in everything.

The horror: beauty as poison The Victorians fell in love with green. Scheele’s Green, and its later, even more intense cousin Paris Green, were used in wallpaper, paint, fabric dyes, artificial flowers, candles, soap, confectionery and children’s toys. It coloured ball gowns, parlour walls, Christmas wreaths and the wallpaper in nurseries where babies slept.

In damp rooms — which described a huge number of British homes — the arsenic pigment in wallpaper could react with mould and moisture to form arsenic‑laden dust and vapours. Those particles flaked, drifted and were inhaled. Families breathed them in at night. Children, closer to the walls and more physiologically vulnerable, were often the first to show symptoms.

Doctors recorded baffling illnesses: persistent nausea, headaches, skin eruptions, eye irritation, hair loss, nerve problems and slow wasting in households decorated with bright green paper. Some entire families sickened, and children died in bedrooms their parents had carefully chosen to be cheerful. Arsenic poisoning mimics many other conditions; the connection to the wallpaper took time to emerge.

The workers who made the fashionable goods suffered worst. Women in London’s artificial‑flower workshops spent long days cutting and shaping arsenic‑dyed leaves and petals. Reports from the 19th century describe them with green‑stained fingernails and skin, chronic vomiting, ulcers that would not heal, damaged eyesight and hair falling out. One physician called them “walking cases of arsenical poisoning.”

Napoleon Bonaparte is one of the most famous possible victims of arsenic green. He died in exile on St Helena in 1821, long believed to have succumbed to stomach cancer. In the late 20th century, analysis of preserved hair samples revealed elevated arsenic levels. The wallpaper at Longwood House, where he lived, was a vivid green; surviving pieces have tested positive for arsenic pigments. Whether the exposure contributed significantly to his death, or merely reflected low‑level chronic poisoning common at the time, is still debated — but the idea that an emperor might have been slowly poisoned by his bedroom décor has proved hard to forget.

William Morris — designer, socialist, and producer of hugely popular wallpapers — was deeply entangled in the story. His family’s company owned a major arsenic mine in Devon. When concerns about arsenic wallpapers began to circulate, Morris dismissed them as hysteria, reportedly referring to the “arsenic scare” as “a greater folly it is hard to conceive.” His business had a direct interest in keeping the pigment in production.

The modern relic: green behind glass By the late 19th century, as medical understanding of toxicology improved and public scandals grew, arsenic greens were gradually replaced by safer synthetic dyes. But for roughly a century, the most fashionable colour in European interiors was also one of the most dangerous substances in the average home.

Samples of Victorian arsenic wallpaper survive in museum collections — including at institutions like the Victoria and Albert Museum in London and the Deutsches Hygiene‑Museum in Dresden. They are kept behind glass. The patterns are exquisite: twisting vines, stylised flowers, delicate leaves. The green is still startlingly vivid. The arsenic is still there.

Pieces of the green wallpaper from Napoleon’s St Helena residence survive in private hands, passed down as relics. Tests have confirmed arsenic compounds in the pigment. The colour that may have contributed to an emperor’s decline is still toxic to handle two centuries later.

The Victorians did eventually learn to fear the shade they had adored, but only after tens of thousands had lived, worked and slept surrounded by it. The green glow in a parlour or nursery promised taste and modernity; it delivered headaches, wasting illnesses and, in some cases, death.

The wallpaper is now in museums. The dresses and artificial flowers have mostly vanished. The pigment remains exactly what Scheele made it: beautiful, memorable, and fundamentally poisonous.

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