ERLANGER
Tunisian Blue Atelier سيدي بو سعيد
The Single-Colour Manifesto

One Blue,
the Whole Village.

Why a clifftop town chose a single saturated cobalt for every door, shutter and wrought-iron grille — and never wavered for a hundred years.

Erlanger blue · five tones, one decision
This is the Sidi Bou Said Blue design system, applied by Curio Design — a design-style library for AI agents. Full Sidi Bou Said Blue guide → designbycurio.com/learn/sidi-bou-said-blue-tunisia