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# Blue period: a colour that keeps returning
- URL: https://cobalt.samadesign.dev/blue-period-a-colour-that-keeps-returning/
- Published: 2026-09-24T08:00:00.000Z
- Updated: 2026-09-24T08:00:00.000Z
- Description: Painters, designers and engineers keep coming back to blue. A short history of the most trusted colour.
- Author: Lea Fontaine
- Tags: Culture, #Import 2026-10-07 01:53

For centuries, blue was the most expensive colour a painter could buy, ground from a stone shipped across continents. It was reserved for what mattered most.

Today it is everywhere: on our screens, our uniforms, our bank cards. Designers choose it because it reads as calm and trustworthy. Artists keep returning to it for the opposite reason: a deep blue can still be unsettling.

Stand in front of a large blue canvas for a full minute. It does not stay the same colour.