How red moved through empires, trade networks, and industrial factories

In 1799, during the storming of the fortress of Seringapatam, British troops broke through the defences of Srirangapatna and killed Tipu Sultan, the ruler of Mysore. The palace inventories compiled in the aftermath record jewels, weapons, manuscripts and textiles of startling colour. Officers wrote with particular fascination about the intensity of the dyed fabrics stored in the royal workshops.

At the same moment, the soldiers themselves wore uniforms dyed in equally vivid scarlet. The British redcoat marching through the palace and the Mysorean textile he admired were both products of a vast global system of dyes — insects raised in the Americas, plants cultivated in Asia, shellfish harvested along Mediterranean coasts.

Global red trade

In the Mediterranean world, the most famous red-purple dye was extracted from marine snails harvested along Levantine shores. Classical writers such as Pliny the Elder describe vats of crushed shells fermenting under the sun, releasing a colour so rare that Roman law eventually reserved it for imperial robes. The value of the dye lay not merely in its hue but in the difficulty of its production: thousands of mollusks sacrificed to colour a single garment. In the Americas, Indigenous farmers raised the cochineal insect on cactus paddles, harvesting the tiny bodies and drying them into a powder that produced a red of extraordinary intensity. A pound of red from these insects could produce enough red colour to run an entire factory. When Spanish ships began exporting cochineal to Europe in the sixteenth century, the dye rapidly became one of the most valuable commodities of the Atlantic world, rivaling silver in price and strategic importance.

Elsewhere, especially across Eurasia, dyers cultivated the roots of the madder plant, whose alizarin compounds could produce deep crimson lakes. These biological reds travelled astonishing distances. A single crimson cloak worn in London or Istanbul might contain colour drawn from insects cultivated in Oaxaca, plants grown in Central Asia, or mollusks harvested from Mediterranean shores. Colour, therefore, linked distant ecologies into networks of exchange long before industrial globalisation. Each red carried with it a geography.

Military power depended on these networks. By the eighteenth century, the scarlet coats of European regiments required reliable supplies of imported dyes. On battlefields clouded with gunpowder smoke, vivid uniforms helped commanders identify their troops and maintain order. The siege of Seringapatam unfolded within this global colour economy. Mysore’s textile workshops produced fabrics dyed through Indian Ocean trade networks that connected Persian, Southeast Asian and South Asian markets. British officers entering the palace encountered not simply decorative cloth but the material traces of a rival commercial system. Empires fought not only for territory but also for control of the commodities that coloured the world.

Imperial cloth

Yet even as imperial armies marched in crimson, the foundations of the dye trade were beginning to shift. For centuries, every brilliant red had depended on living organisms, whether it was roots pulled from soil, or insects harvested from cacti, or shellfish gathered along rocky coasts. In 1856, the English chemist William Henry Perkin inadvertently altered this relationship. While attempting to synthesise quinine in an experiment, he produced a purple residue that dyed silk with remarkable intensity. The compound, later marketed as mauveine, inaugurated the modern synthetic dye industry. Within a few decades, chemists learned to reproduce the molecular structures responsible for many natural colours. In 1869, industrial chemists succeeded in synthesising alizarin, which is the key red component of madder, making centuries of agricultural cultivation suddenly unnecessary.

The implications were profound. Madder fields across Europe collapsed almost overnight. Cochineal plantations faced competition from cheaper laboratory pigments. What had once required soil, insects, seasons and skilled cultivation could now be produced in factories wherever coal, glassware and chemical knowledge were available.

Red was becoming abstract. Red moved from earth, to organism, to laboratory — from ritual substance to industrial commodity. And as pigments entered the circuits of factories, markets and empires, the meanings attached to red also began to shift: from sacrifice and sovereignty to revolution, warning, and mass politics.

Synthetic shift

The colour remained the same to the eye, but the world that produced it, and the world that would perceive red as a phenomenon, had both fundamentally changed.

(Satwik Gade is a Chennai-based writer and illustrator. This article is part of a series on the history and development of colours)