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The hexadecimal color code #21403B is a very dark, muted shade of Teal (known as darkslategray). In the RGB color model, #21403B is comprised of 33 red, 64 green, and 59 blue. In the HSL color space, which is often used in digital design and color grading, it has a hue of 170 degrees, a saturation of 32%, and a lightness of 19%. This color has an approximate wavelength of 532 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 #21403B.