Cerulean is a
cool medium color with the hex code #21C5F2.
This vibrant hue can be represented as RGB
33, 197, 242 in digital design or CMYK 86%, 19%, 0%, 5% for print applications.
Find matching Pantone color.
Cerulean
#21C5F2
Cerulean color values
- HEX
- #21C5F2
- RGB
- 33, 197, 242
- HSL
- 193°, 89%, 54%
- CMYK
- 86, 19, 0, 5
Shades & tints
Darker Lighter
About this color
Cerulean sits at 193° on the color wheel with 89% saturation and 54% lightness, placing it in the cyan segment of the spectrum. With saturation at 89%, this is a high-chroma color: the kind that anchors palettes and demands considered placement. At medium-high lightness, it holds its own on white backgrounds while remaining approachable.
In digital environments, Cerulean is rendered as rgb(33, 197, 242), where the blue channel is highest at 242, anchoring the color in the cool register. 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 translates to a CMYK breakdown of 86C 19M 0Y 5K. With almost no black ink (5%), this color is built almost entirely from process inks: 86% cyan, 19% magenta. This profile tends toward vibrancy in print, though ink density limits on press may affect saturation on coated versus uncoated stock. 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
CSS Variable
:root {
--brand-primary: #21C5F2;
--brand-primary-rgb: 33, 197, 242;
}Define as a CSS custom property for consistent theming across your site.
Tailwind Config
colors: {
brand: '#21C5F2',
}
Add to your Tailwind config to use classes like bg-brand.
Print Design (CMYK)
C: 86%
M: 19%
Y: 0%
K: 5%Use these CMYK values in Adobe Illustrator, InDesign, or print specifications.
RGB for Screens
rgb(33, 197, 242)
rgba(33, 197, 242, 0.8)Use RGB notation for compatibility or add alpha channel for transparency.
Frequently asked questions
What color is #21C5F2?
#21C5F2 is Cerulean, a cool medium color with RGB values of 33, 197, 242. It has a hue of 193°, 89%
saturation, and 54% lightness in the HSL color
space.
What is the RGB value of #21C5F2?
The RGB color code for #21C5F2 is rgb(33, 197, 242). This means it contains 33 red,
197 green, and 242 blue in the RGB color model.
Is Cerulean a warm or cool color?
Cerulean (#21C5F2) is a cool color with a hue between 120-300° on the color wheel.
How do I use #21C5F2 in CSS?
You can use #21C5F2 in CSS with:
background-color: #21C5F2; or color: #21C5F2; or as an RGB value: rgb(33, 197, 242). For print design, use CMYK: 86%, 19%, 0%, 5%.