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Cerulean Blue

#0052CC aka “Atlassian Blue” by Atlassian

Cerulean Blue is a cool medium color with the hex code #0052CC. Also known as "Atlassian Blue" by Atlassian . This vibrant hue can be represented as RGB 0, 82, 204 in digital design or CMYK 100%, 60%, 0%, 20% for print applications. Find matching Pantone color. Currently, 1 brand uses this color in their visual identity, making it a proven choice for professional branding and web design.

Cerulean Blue color values

HEX
#0052CC
RGB
0, 82, 204
HSL
216°, 100%, 40%
CMYK
100, 60, 0, 20

Shades & tints

Darker Lighter

About this color

Cerulean Blue sits at 216° on the color wheel with 100% saturation and 40% 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. 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(0, 82, 204), where the blue channel is highest at 204, 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 60M 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. In brand applications, this exact value is specified as Atlassian Blue.

Color harmonies

Complementary

Split-Complementary

How to use Cerulean Blue

CSS Variable 

:root {
  --brand-primary: #0052CC;
  --brand-primary-rgb: 0, 82, 204;
}

Define as a CSS custom property for consistent theming across your site.

Tailwind Config 

colors: {
  brand: '#0052CC',
}

Add to your Tailwind config to use classes like bg-brand.

Print Design (CMYK) 

C: 100%
M: 60%
Y: 0%
K: 20%

Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.

RGB for Screens 

rgb(0, 82, 204)
rgba(0, 82, 204, 0.8)

Use RGB notation for compatibility or add alpha channel for transparency.

Brands using Cerulean Blue

1 brand uses this color in their identity

Atlassian

Technology • In-house Atlassian

Brands using similar hue

24 brand s with colors near 216° on the color wheel

Twilio logo
Twilio
Wix logo
Wix
BMW logo
BMW
Dropbox logo
Dropbox

Frequently asked questions

What color is #0052CC?
#0052CC is Cerulean Blue, a cool medium color with RGB values of 0, 82, 204. It has a hue of 216°, 100% saturation, and 40% lightness in the HSL color space.
What is the RGB value of #0052CC?
The RGB color code for #0052CC is rgb(0, 82, 204). This means it contains 0 red, 82 green, and 204 blue in the RGB color model.
Is Cerulean Blue a warm or cool color?
Cerulean Blue (#0052CC) is a cool color with a hue between 120-300° on the color wheel.
How do I use #0052CC in CSS?
You can use #0052CC in CSS with: background-color: #0052CC; or color: #0052CC; or as an RGB value: rgb(0, 82, 204). For print design, use CMYK: 100%, 60%, 0%, 20%.

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