The word ochre tends to be associated with the warm brownish-yellow color, although it also refers to the physical substance that once removed from the earth, crushed, and combined with liquid, becomes paint. In
When you get into the nature of color (akin to tracing food from farm to table), you start to realize color symbolism has a lot of direct, solid foundations in geomorphology. Red that feels “intense or energizing” is often made of 500 million-year-old ancient volcano spew. Yellow that is “sunny” might be ochre made by spring sunlight interacting with microbes to create fresh iron hydroxide. Blue that feels “mournful or spiritual” could be made from vivianite (iron phosphate) forming in dead bodies.
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