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The hexadecimal color code #0003D1 is a medium, intense shade of Blue (known as mediumblue). In the RGB color model, #0003D1 is comprised of 0 red, 3 green, and 209 blue. In the HSL color space, which is often used in digital design and color grading, it has a hue of 239 degrees, a saturation of 100%, and a lightness of 41%. This color has an approximate wavelength of 484 nm. The closest web-safe color is often utilized in web design, user interfaces (UI), and vector graphics to create intense 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 #0003D1.