Cerulean Blue is a
cool medium color with the hex code #0155CB.
This vibrant hue can be represented as RGB
1, 85, 203 in digital design or CMYK 100%, 58%, 0%, 20% for print applications.
Find matching Pantone color.
Cerulean Blue
#0155CB
Cerulean Blue color values
- HEX
- #0155CB
- RGB
- 1, 85, 203
- HSL
- 215°, 99%, 40%
- CMYK
- 100, 58, 0, 20
Shades & tints
Darker Lighter
About this color
Cerulean Blue sits at 215° on the color wheel with 99% saturation and 40% lightness, placing it in the blue segment of the spectrum. With saturation at 99%, this is a high-chroma color: the kind that anchors palettes and demands considered placement. 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(1, 85, 203), where the blue channel is highest at 203, producing a strongly blue character. The mid-range lightness and strong saturation make this versatile for both foreground and background roles, depending on what it is paired against.
For print, Cerulean Blue translates to a CMYK breakdown of 100C 58M 0Y 20K. The low-to-moderate black value (20%) means the color's character in print comes primarily from its cyan ink content (100%), 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: #0155CB;
--brand-primary-rgb: 1, 85, 203;
}Define as a CSS custom property for consistent theming across your site.
Tailwind Config
colors: {
brand: '#0155CB',
}
Add to your Tailwind config to use classes like bg-brand.
Print Design (CMYK)
C: 100%
M: 58%
Y: 0%
K: 20%Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.
RGB for Screens
rgb(1, 85, 203)
rgba(1, 85, 203, 0.8)Use RGB notation for compatibility or add alpha channel for transparency.
Frequently asked questions
What color is #0155CB?
#0155CB is Cerulean Blue, a cool medium color with RGB values of 1, 85, 203. It has a hue of 215°, 99%
saturation, and 40% lightness in the HSL color
space.
What is the RGB value of #0155CB?
The RGB color code for #0155CB is rgb(1, 85, 203). This means it contains 1 red,
85 green, and 203 blue in the RGB color model.
Is Cerulean Blue a warm or cool color?
Cerulean Blue (#0155CB) is a cool color with a hue between 120-300° on the color wheel.
How do I use #0155CB in CSS?
You can use #0155CB in CSS with:
background-color: #0155CB; or color: #0155CB; or as an RGB value: rgb(1, 85, 203). For print design, use CMYK: 100%, 58%, 0%, 20%.