Blue-green

Historically, achieving this specific intensity was difficult until the synthesis of phthalocyanine pigments in 1935. Before modern chemistry, artists relied on unstable mixtures of Prussian blue and various yellow lakes, which often faded or shifted over time. In ancient Egypt, a similar hue known as Egyptian Blue was created using ground silica and copper, representing the fertility of the Nile.

The color gained massive popularity during the Mid-century Modern movement of the 1950s. It became a staple for kitchen appliances and automotive paint, signaling a departure from the somber tones of the war era toward a future of innovation and cleanliness. Today, it remains a hallmark of digital-first branding due to its high visibility on backlit screens.

Psychologically, blue-green represents a state of mental equilibrium. Because it combines the cooling effect of blue with the life-giving associations of green, it is often used in environments intended to reduce anxiety without inducing sleepiness. It encourages a sense of professional clarity, making it a favorite for tech startups that want to appear both established and fresh.

In many Eastern cultures, this spectrum is associated with the healing properties of jade and the regenerative powers of nature. It strikes a balance between the introverted nature of deep blue and the extroverted energy of bright green. This makes it a powerful tool for designers looking to foster trust while maintaining a modern, energetic edge.

In the natural world, this shade is most prominently seen in shallow reefs where sunlight scatters through clear seawater. It is also found in the structural coloration of peacock feathers and the shimmering scales of the parrotfish. When copper minerals like malachite undergo oxidation, they often produce this distinct blue-green crust. Unlike rare violets, this hue is abundant in aquatic ecosystems, reflecting the presence of chlorophyll and mineral deposits.

From a design perspective, #0D98BA is a versatile accent that provides excellent contrast against warm neutrals like sand or terracotta. In User Interface (UI) design, it functions well for action buttons or progress bars because it possesses high readability against both white and dark-mode backgrounds. However, designers must ensure a high contrast ratio to meet accessibility standards, as blue-green can sometimes vibrate against certain shades of red.

To use this color effectively, pair it with deep navy for a sense of hierarchy or with soft corals for a vibrant, summer-inspired palette. It is best utilized in sectors like healthcare, finance, or environmental technology where the goal is to communicate sophistication and environmental consciousness simultaneously. Avoid using it in overly large blocks in small rooms, as its high saturation can feel heavy if not balanced with light.