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The hexadecimal color code #51817E is a medium, muted shade of Teal (known as slategray). In the RGB color model, #51817E is comprised of 81 red, 129 green, and 126 blue. In the HSL color space, which is often used in digital design and color grading, it has a hue of 176 degrees, a saturation of 23%, and a lightness of 41%. This color has an approximate wavelength of 528 nm. The closest web-safe color is often utilized in web design, user interfaces (UI), and vector graphics to create muted Teal atmospheres. Designers searching for Teal 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 #51817E.