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The hexadecimal color code #135B81 is a dark, vibrant shade of Cyan (known as teal). In the RGB color model, #135B81 is comprised of 19 red, 91 green, and 129 blue. In the HSL color space, which is often used in digital design and color grading, it has a hue of 201 degrees, a saturation of 74%, and a lightness of 29%. This color has an approximate wavelength of 510 nm. The closest web-safe color is often utilized in web design, user interfaces (UI), and vector graphics to create vibrant Cyan atmospheres. Designers searching for Cyan color schemes often pair this with its complementary color or use it as an accent against neutral backgrounds. It is commonly used in digital design for backgrounds, typography, and accent elements. When paired with its complementary color in the palette below, it creates a high-contrast visual hierarchy. Engineers can implement this color using the CSS hex code #135B81.