International Klein Blue

Q: How do I use #1F2FAD in CSS?

You can use #1F2FAD in CSS with: background-color: #1F2FAD; or color: #1F2FAD; or as an RGB value: rgb(31, 47, 173). For print design, use CMYK: 82%, 73%, 0%, 32%.

#1F2FAD

International Klein Blue is a cool medium color with the hex code #1F2FAD. This vibrant hue can be represented as RGB 31, 47, 173 in digital design or CMYK 82%, 73%, 0%, 32% for print applications. Find matching Pantone color.

International Klein Blue color values

HEX: #1F2FAD
RGB: 31, 47, 173
HSL: 233°, 70%, 40%
CMYK: 82, 73, 0, 32

Shades & tints

Darker Lighter

About this color

International Klein Blue sits at 233° on the color wheel with 70% saturation and 40% lightness, placing it in the blue segment of the spectrum. At 70% 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(31, 47, 173), where the blue channel is highest at 173, 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 82C 73M 0Y 32K. With a moderate key (32%), 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: #1F2FAD;
  --brand-primary-rgb: 31, 47, 173;
}

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

Tailwind Config

colors: {
  brand: '#1F2FAD',
}

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

Print Design (CMYK)

C: 82%
M: 73%
Y: 0%
K: 32%

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

RGB for Screens

rgb(31, 47, 173)
rgba(31, 47, 173, 0.8)

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

Brands using similar hue

24 brand s with colors near 233° on the color wheel

Frequently asked questions

What color is #1F2FAD?

#1F2FAD is International Klein Blue, a cool medium color with RGB values of 31, 47, 173. It has a hue of 233°, 70% saturation, and 40% lightness in the HSL color space.

What is the RGB value of #1F2FAD?

The RGB color code for #1F2FAD is rgb(31, 47, 173). This means it contains 31 red, 47 green, and 173 blue in the RGB color model.

Is International Klein Blue a warm or cool color?

International Klein Blue (#1F2FAD) is a cool color with a hue between 120-300° on the color wheel.

How do I use #1F2FAD in CSS?

You can use #1F2FAD in CSS with: background-color: #1F2FAD; or color: #1F2FAD; or as an RGB value: rgb(31, 47, 173). For print design, use CMYK: 82%, 73%, 0%, 32%.