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The hexadecimal color code #15403A is a very dark, moderate shade of Teal (known as darkslategray). In the RGB color model, #15403A is comprised of 21 red, 64 green, and 58 blue. In the HSL color space, which is often used in digital design and color grading, it has a hue of 172 degrees, a saturation of 51%, and a lightness of 17%. This color has an approximate wavelength of 531 nm. The closest web-safe color is often utilized in web design, user interfaces (UI), and vector graphics to create moderate 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 #15403A.