International Klein Blue

#0B3AA8

About International Klein Blue

International Klein Blue, with the hex code #0B3AA8, is a deep, intense blue color that was originally developed by the French artist Yves Klein. He sought to create a blue that captured the essence of the sky and the sea, embodying a sense of boundless space and spiritual depth. Klein registered this particular shade of blue as a trademark in 1957, ensuring its association with his artistic vision. The color's unique quality lies in its matte finish, which enhances its intensity and gives it a velvety texture. It has since become a significant color in the art world and beyond. Its prominent place in modern art and design solidifies its importance as a visually striking and emotionally resonant color choice.

The hex color #0b3aa8, also known as International Klein Blue, presents certain accessibility challenges, particularly concerning color contrast. When used as a foreground color for text, it requires careful consideration of the background color to ensure sufficient contrast for readability, especially for users with visual impairments. A light background is highly recommended to meet WCAG (Web Content Accessibility Guidelines) standards for contrast ratios. Insufficient contrast can make text difficult or impossible to read for some users. Additionally, avoid using this color as the sole indicator of important information; supplement it with text labels or icons to ensure accessibility for users who may not be able to distinguish the color effectively. When used for interactive elements, like buttons or links, it's crucial to provide clear visual cues, such as a change in background color or the addition of an underline, on hover or focus states.

Shades

Digital Color Formats

RGB
11 58 168
RGB11 58 168
Red
Green
Blue
HSL
222.04deg 87.71% 35.1%
222.0487.7135.1HSL
Hue
Saturation
Lightness
HWB
222.04deg 4.31% 34.12%
222.044.3134.12HWB
Hue
Whiteness
Blackness
hex#0B3AA8
rgb11 58 168
hsl222.04deg 87.71% 35.1%
cmyk93.45% 65.48% 0% 34.12%
hwb222.04deg 4.31% 34.12%
xyz-d650.09 0.06 0.38
oklch0.4013 0.1826 263.2
oklab0.4013 -0.02 -0.18
CMYK
93.45% 65.48% 0% 34.12%
93.4565.48034.12CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.38
0.090.060.38XYZ
X
Y
Z
OKLCH
0.4013 0.1826 263.2
0.40130.1826263.2LCH
Lightness
Chroma
Hue
OKLAB
0.4013 -0.02 -0.18
0.4013-0.02-0.18LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons