Cerulean Blue is a
cool medium color with the hex code #3756C8.
This moderately saturated hue can be represented as RGB
55, 86, 200 in digital design or CMYK 73%, 57%, 0%, 22% for print applications.
Find matching Pantone color.
Cerulean Blue
#3756C8
Cerulean Blue color values
- HEX
- #3756C8
- RGB
- 55, 86, 200
- HSL
- 227°, 57%, 50%
- CMYK
- 73, 57, 0, 22
Shades & tints
Darker Lighter
About this color
Cerulean Blue sits at 227° on the color wheel with 57% saturation and 50% lightness, placing it in the blue segment of the spectrum. The moderate 57% saturation gives it enough color presence to register clearly without competing for dominance in a composition. Its mid-range lightness positions it as a mid-tone: neither a background color nor a deep accent, but something in between.
In digital environments, Cerulean Blue is rendered as rgb(55, 86, 200), where the blue channel is highest at 200, producing a strongly blue character. This cool mid-tone is a reliable choice for UI chrome, informational states, and contexts that call for a calm, readable presence.
For print, Cerulean Blue translates to a CMYK breakdown of 73C 57M 0Y 22K. The low-to-moderate black value (22%) means the color's character in print comes primarily from its cyan ink content (73%), with black serving as a supporting shadow tone. 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 Cerulean Blue
CSS Variable
:root {
--brand-primary: #3756C8;
--brand-primary-rgb: 55, 86, 200;
}Define as a CSS custom property for consistent theming across your site.
Tailwind Config
colors: {
brand: '#3756C8',
}
Add to your Tailwind config to use classes like bg-brand.
Print Design (CMYK)
C: 73%
M: 57%
Y: 0%
K: 22%Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.
RGB for Screens
rgb(55, 86, 200)
rgba(55, 86, 200, 0.8)Use RGB notation for compatibility or add alpha channel for transparency.
Frequently asked questions
What color is #3756C8?
#3756C8 is Cerulean Blue, a cool medium color with RGB values of 55, 86, 200. It has a hue of 227°, 57%
saturation, and 50% lightness in the HSL color
space.
What is the RGB value of #3756C8?
The RGB color code for #3756C8 is rgb(55, 86, 200). This means it contains 55 red,
86 green, and 200 blue in the RGB color model.
Is Cerulean Blue a warm or cool color?
Cerulean Blue (#3756C8) is a cool color with a hue between 120-300° on the color wheel.
How do I use #3756C8 in CSS?
You can use #3756C8 in CSS with:
background-color: #3756C8; or color: #3756C8; or as an RGB value: rgb(55, 86, 200). For print design, use CMYK: 73%, 57%, 0%, 22%.