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The hexadecimal color code #123563 is a dark, vibrant shade of Blue (known as midnightblue). In the RGB color model, #123563 is comprised of 18 red, 53 green, and 99 blue. In the HSL color space, which is often used in digital design and color grading, it has a hue of 214 degrees, a saturation of 69%, and a lightness of 23%. This color has an approximate wavelength of 501 nm. The closest web-safe color is often utilized in web design, user interfaces (UI), and vector graphics to create vibrant Blue atmospheres. Designers searching for Blue 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 #123563.