Red is one of the earliest colours humans learned to produce reliably, from prehistoric ochre through to some of the most expensive and most dangerous pigments ever made.
No single HEX value defines this entire colour family — see individual colour profiles below for specific shades.
Red ochre is among the oldest pigments used by humans, found in archaeological sites tens of thousands of years old, well before organised agriculture.
prehistory
Vermilion, made from the mineral cinnabar, was prized in antiquity for its intensity but contains mercury — one of the earliest widely-documented cases of a beautiful pigment carrying a real health hazard.
antiquity
Cochineal red, extracted from an insect native to the Americas, became one of the most valuable traded goods after European contact with the continent, prized for producing a vivid, durable red dye.
Americas and Europe · 16th century onward
Red has repeatedly been used as an official or military colour — from Roman military cloaks to the British army's historical redcoats — likely valued in part for high visibility and morale association.
Rome and Britain
In modern branding and digital design, red remains one of the most commonly used colours for urgency, warning and call-to-action elements, building on its long-standing warning/alert associations.
General