Hex Color Code #00288B — RGB & HSL Conversions
How to use the #00288B color code in HTML & CSS?
To apply the hex color #00288B in web design, set the color property inside your CSS stylesheet. For example, adding background-color: #00288B; will paint elements in this cool undertone shade. In modern CSS structures, you can configure it as a custom variable --color-hex: #00288B; or utilize it directly in Tailwind CSS via arbitrary utility values like bg-[#00288B].
What are the RGB and HSL conversion values for #00288B?
In the digital sRGB color space, the hex value #00288B is converted to RGB values of Red: 0, Green: 40, and Blue: 139. When analyzed under the HSL model, its coordinates correspond to hue angle 223°, 100% saturation, and 27% lightness. This makes it visually a dark, rich color with a highly vivid, intense, and brilliant shade.
CMYK print code settings for #00288B
When converting #00288B for CMYK printing, the color separation consists of 100% Cyan, 71% Magenta, 0% Yellow, and 45% key/black. In digital designs, blue coordinates like this are highly favored by technical and corporate platforms to foster user trust, stability, and clean readability.
HEX #00288B Color Space Conversions
Click to copy formatContrast & Accessibility (WCAG 2.1) Check
White text readability test with #00288B
Small body copy preview
Black text readability test with #00288B
Small body copy preview
Complementary & Analogous Harmonies
Perfect matching color schemes for your designsShades & Tints Generator Matrix
Copy shade hex values instantlyDarker Shades (Adding Black)
Lighter Tints (Adding White)
CSS Custom Properties (Variables)
--color-hex: #00288B;
--color-rgb: rgb(0, 40, 139);
--color-hsl: hsl(223deg, 100%, 27%);