RAL 5009 Azure Blue

RAL 5009 Azure Blue (#025669) is a deep, dark teal-blue from the RAL Classic system evoking the deep azure of the Mediterranean sky. This rich, dark blue-green is used in European maritime branding, deep-sea themed product design, and sophisticated interior design where a profound, ocean-depth blue-green provides gravitas.

Dark cyans and deep aquas convey depth, reliability, and technical mastery. They carry the trustworthiness of blue with a modern, slightly warmer edge from their green component. These tones suggest specialized expertise and sophisticated engineering.

Dark cyan works for cybersecurity brands, developer platforms, and data infrastructure companies. It creates striking dark-mode accents and terminal-style interfaces that feel technical yet approachable. Pair it with lighter cyan highlights and neutral grays for a layered, depth-rich design system.