Astronaut is a balanced, moderately saturated blue with hex value #445172 and RGB coordinates rgb(68, 81, 114). In the HSL color space it reads hsl(223, 25%, 36%), and in CMYK print production it translates to cmyk(40%, 29%, 0%, 55%). It sits in the blue family of the visible spectrum.

Colors in the blue family are commonly associated with trust, depth, professionalism, tranquility. Astronaut inherits those signals and shifts them according to its depth: darker variants feel grounded and authoritative. Designers reach for this shade when they want to evoke trust without overwhelming the surrounding palette.

Across cultures, blue frequently signals trust and depth. In modern digital design Astronaut is often chosen to communicate calm and restraint, especially when paired with neutral supporting tones. It behaves well as a primary or typographic color.

Choose Astronaut when you want the familiarity of blue with a specific grounded character. Its WCAG contrast on white is 7.88:1 and on black is 2.67:1, which means it works well for body text on light backgrounds.

Astronaut is well-suited for primary buttons, brand accents, links, and focal UI elements. In branding it often appears in SaaS, finance, and healthcare contexts. Pair it with a complementary accent and a neutral anchor for a balanced palette.