International Klein Blue

Q: How do I use #2428A8 in CSS?

You can use #2428A8 in CSS with: background-color: #2428A8; or color: #2428A8; or as an RGB value: rgb(36, 40, 168). For print design, use CMYK: 79%, 76%, 0%, 34%.

#2428A8

International Klein Blue is a cool medium color with the hex code #2428A8. This vibrant hue can be represented as RGB 36, 40, 168 in digital design or CMYK 79%, 76%, 0%, 34% for print applications. Find matching Pantone color.

International Klein Blue color values

HEX: #2428A8
RGB: 36, 40, 168
HSL: 238°, 65%, 40%
CMYK: 79, 76, 0, 34

Shades & tints

Darker Lighter

About this color

International Klein Blue sits at 238° on the color wheel with 65% saturation and 40% lightness, placing it in the blue segment of the spectrum. At 65% saturation, the hue is fully legible and confident — richly chromatic without tipping into high-contrast territory. 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, International Klein Blue is rendered as rgb(36, 40, 168), where the blue channel is highest at 168, 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, International Klein Blue translates to a CMYK breakdown of 79C 76M 0Y 34K. With a moderate key (34%), 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 International Klein Blue

CSS Variable

:root {
  --brand-primary: #2428A8;
  --brand-primary-rgb: 36, 40, 168;
}

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

Tailwind Config

colors: {
  brand: '#2428A8',
}

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

Print Design (CMYK)

C: 79%
M: 76%
Y: 0%
K: 34%

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

RGB for Screens

rgb(36, 40, 168)
rgba(36, 40, 168, 0.8)

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

Brands using similar hue

24 brand s with colors near 238° on the color wheel

Frequently asked questions

What color is #2428A8?

#2428A8 is International Klein Blue, a cool medium color with RGB values of 36, 40, 168. It has a hue of 238°, 65% saturation, and 40% lightness in the HSL color space.

What is the RGB value of #2428A8?

The RGB color code for #2428A8 is rgb(36, 40, 168). This means it contains 36 red, 40 green, and 168 blue in the RGB color model.

Is International Klein Blue a warm or cool color?

International Klein Blue (#2428A8) is a cool color with a hue between 120-300° on the color wheel.

How do I use #2428A8 in CSS?

You can use #2428A8 in CSS with: background-color: #2428A8; or color: #2428A8; or as an RGB value: rgb(36, 40, 168). For print design, use CMYK: 79%, 76%, 0%, 34%.