Congress Blue is a
cool dark color with the hex code #00478F.
This vibrant hue can be represented as RGB
0, 71, 143 in digital design or CMYK 100%, 50%, 0%, 44% for print applications.
Find matching Pantone color.
Congress Blue
#00478F
Congress Blue color values
- HEX
- #00478F
- RGB
- 0, 71, 143
- HSL
- 210°, 100%, 28%
- CMYK
- 100, 50, 0, 44
Shades & tints
Darker Lighter
About this color
Congress Blue sits at 210° on the color wheel with 100% saturation and 28% lightness, placing it in the blue segment of the spectrum. With saturation at 100%, this is a high-chroma color: the kind that anchors palettes and demands considered placement. The lower lightness gives it weight and depth, lending gravity to any palette it enters.
In digital environments, Congress Blue is rendered as rgb(0, 71, 143), where the blue channel is highest at 143, 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 100C 50M 0Y 44K. With a moderate key (44%), 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: #00478F;
--brand-primary-rgb: 0, 71, 143;
}Define as a CSS custom property for consistent theming across your site.
Tailwind Config
colors: {
brand: '#00478F',
}
Add to your Tailwind config to use classes like bg-brand.
Print Design (CMYK)
C: 100%
M: 50%
Y: 0%
K: 44%Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.
RGB for Screens
rgb(0, 71, 143)
rgba(0, 71, 143, 0.8)Use RGB notation for compatibility or add alpha channel for transparency.
Frequently asked questions
What color is #00478F?
#00478F is Congress Blue, a cool dark color with RGB values of 0, 71, 143. It has a hue of 210°, 100%
saturation, and 28% lightness in the HSL color
space.
What is the RGB value of #00478F?
The RGB color code for #00478F is rgb(0, 71, 143). This means it contains 0 red,
71 green, and 143 blue in the RGB color model.
Is Congress Blue a warm or cool color?
Congress Blue (#00478F) is a cool color with a hue between 120-300° on the color wheel.
How do I use #00478F in CSS?
You can use #00478F in CSS with:
background-color: #00478F; or color: #00478F; or as an RGB value: rgb(0, 71, 143). For print design, use CMYK: 100%, 50%, 0%, 44%.