Congress Blue is a
cool dark color with the hex code #124387.
This vibrant hue can be represented as RGB
18, 67, 135 in digital design or CMYK 87%, 50%, 0%, 47% for print applications.
Find matching Pantone color.
Congress Blue
#124387
Congress Blue color values
- HEX
- #124387
- RGB
- 18, 67, 135
- HSL
- 215°, 76%, 30%
- CMYK
- 87, 50, 0, 47
Shades & tints
Darker Lighter
About this color
Congress Blue sits at 215° on the color wheel with 76% saturation and 30% lightness, placing it in the blue segment of the spectrum. At 76% saturation, the hue is fully legible and confident — richly chromatic without tipping into high-contrast territory. The lower lightness gives it weight and depth, lending gravity to any palette it enters.
In digital environments, Congress Blue is rendered as rgb(18, 67, 135), where the blue channel is highest at 135, producing a strongly blue character. High saturation combined with low lightness creates deep, jewel-toned results — useful for premium UI elements, hover states, and focused interaction areas.
For print, Congress Blue translates to a CMYK breakdown of 87C 50M 0Y 47K. With a moderate key (47%), this color uses black to deepen the chromatic channels rather than replace them, a profile that typically holds up well in both offset and digital print. No brands in the brandkit.pro library currently specify this exact hex as a named brand color.
Color harmonies
Complementary
Analogous
Triadic
Split-Complementary
How to use Congress Blue
CSS Variable
:root {
--brand-primary: #124387;
--brand-primary-rgb: 18, 67, 135;
}Define as a CSS custom property for consistent theming across your site.
Tailwind Config
colors: {
brand: '#124387',
}
Add to your Tailwind config to use classes like bg-brand.
Print Design (CMYK)
C: 87%
M: 50%
Y: 0%
K: 47%Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.
RGB for Screens
rgb(18, 67, 135)
rgba(18, 67, 135, 0.8)Use RGB notation for compatibility or add alpha channel for transparency.
Frequently asked questions
What color is #124387?
#124387 is Congress Blue, a cool dark color with RGB values of 18, 67, 135. It has a hue of 215°, 76%
saturation, and 30% lightness in the HSL color
space.
What is the RGB value of #124387?
The RGB color code for #124387 is rgb(18, 67, 135). This means it contains 18 red,
67 green, and 135 blue in the RGB color model.
Is Congress Blue a warm or cool color?
Congress Blue (#124387) is a cool color with a hue between 120-300° on the color wheel.
How do I use #124387 in CSS?
You can use #124387 in CSS with:
background-color: #124387; or color: #124387; or as an RGB value: rgb(18, 67, 135). For print design, use CMYK: 87%, 50%, 0%, 47%.