Colour seems like one of the most immediate things in human experience. Fox's cultural history suggests it is one of the most constructed.

Black, in most Western cultures, is the colour of mourning. Yet, it is also the colour of elegance, authority, and luxury. These meanings do not cancel each other out. They coexist. The person dressed in black at a funeral and the person dressed in black at a fashion show are drawing on the same symbolic repertoire and producing entirely different effects. This is how symbolic meaning works.

James Fox's cultural history of colour is, among other things, a sustained demonstration of this point across six colours, dozens of cultures, and several thousand years. White is purity and white is death, simultaneously and without contradiction, in cultures that have held both meanings for centuries. Red is life, blood, danger, celebration, and political allegiance — not in sequence but all at once, available to be activated by context. The researcher who approaches colour symbolism looking for a single stable meaning will find one, because the evidence for any particular association is always there. What they will miss is the competing evidence that is equally present, real, and operative.

This does not make colour symbolism opaque or impossible to study. It makes it more demanding to research than it appears. The meanings are stable enough to study, but they are not unambiguous, and treating them as if they were produces a cleaner picture than the reality supports. Colour is one of the most reliable doors into the symbolic life of a culture precisely because its associations run so deep, below the level of conscious articulation. People rarely explain why black feels appropriate for certain situations. They simply know. That makes research on colour so exciting as you constantly move from obvious to mysterious, back and forth again and again.

The historical dimension adds a further layer of complexity that Fox traces with considerable patience. Blue, which is now the world's most consistently preferred colour across cultures and the default of corporate trustworthiness from bank logos to social media platforms, was for most of Western history a marginal colour. It lacked the ancient symbolic weight of red, the moral authority of white, the power of black. Its ascent — driven by the availability of lapis lazuli, the theology of the Virgin's mantle, then the economics of indigo and the chemistry of Prussian blue — took centuries and left almost no trace of its own mechanism. The meaning feels natural because it has been stable long enough to feel inevitable. It isn't.

The most compressed and instructive demonstration of how meaning gets made comes not from any of the ancient colours but from the more modern one. When William Perkin accidentally synthesised mauve in 1856 — the first chemically produced colour — he created something that had never existed before in the world: a colour with no cultural history, no symbolic inheritance. What happened next was the process of meaning-making in fast-forward. Within a few years, mauve and its synthetic relatives — magenta, aniline violet, the whole lurid palette of the new industrial chemistry — had accumulated a dense cluster of disparate associations: modernity, artificiality, decadence, femininity, vulgarity, fascination. After a few decades these meanings felt as embedded as the associations attached to colours that had existed for millennia. They were not. They were produced, rapidly and visibly, by the collision of a new thing with the cultural moment into which it arrived — a Victorian society simultaneously excited by industrial progress and anxious about its moral consequences. The synthetic colours absorbed both the excitement and the anxiety, and they have carried that ambivalence ever since.

What the mauve moment reveals — and what Fox's broader project makes visible — is that colour never means in isolation. It means in relation: to other colours, to the cultural system those colours already occupy, to the historical moment in which a particular association crystallises. This is why Fox needed more than three colours to say what he wanted to say. The BBC series that preceded this book — built around gold, blue, and white — showed how individual colours carry history. The book shows something harder to demonstrate with three: that the meanings are produced relationally, each colour partly defined by what the others are doing around it. Black is partly what it is because white exists. Red means what it means partly because blue means something different. The system is the argument, and the individual colour can only be fully understood within it. The richness is not a problem to be simplified away.