#139E9E Hex Color
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#139e9e is a cool cyan with a green undertone, moderate saturation, and medium-dark lightness. Its refreshing character suits technology, communication, aerospace, and productivity interfaces. Use it as a supporting color with charcoal or warm coral, rather than a full-page background. The hex code is #139e9e, and black text achieves about 6.4:1 contrast.
Questions about #139e9e
What is #139e9e in RGB, HSL and CMYK?
In RGB, #139e9e is rgb(19, 158, 158), in HSL hsl(180, 79%, 35%) and in CMYK 88%, 0%, 0%, 38%.
What colors pair well with #139e9e?
Does #139e9e read as warm or cool?
#139e9e reads as a cool cyan because its blue-green balance leans toward blue, while the green undertone keeps it fresher and more approachable than a pure blue in digital interfaces. It suits focused, modern, and refreshing visual systems.
Where does #139e9e work best?
#139e9e works best as a supporting accent in technology, communication, aerospace, and productivity interfaces, where its refreshing cyan character can highlight actions, status elements, or navigation without overwhelming the entire screen.
Is #139e9e readable on white or black?
#139e9e has a 3.27:1 contrast ratio on white and 6.41:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it works only for large text (24px, or 18.5px bold) and on black it works for body text. Try other pairs in the contrast checker.