International Klein Blue

#0022B0

About International Klein Blue

International Klein Blue, often referred to as IKB, is a deep blue hue first mixed by the French artist Yves Klein. This specific shade of blue was synthetically created and registered as a trademark by Klein. The intention behind IKB was to achieve the greatest expression of blue, free from associations or functional justification. The color is achieved by maintaining the pigment's original qualities and visual impact. This remarkable color falls under the category of blue hues, exhibiting a strong intensity and depth. It is often associated with ultramarine and cobalt blue pigments, though its specific chromatic properties set it apart. Because of its intensity, the color has gained significant recognition in the art and design world.

The color #0022B0, also known as International Klein Blue (IKB), presents significant accessibility challenges, especially in web design. Its dark hue necessitates very light text colors to ensure sufficient contrast for readability. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. Using white or very light shades of yellow or green as the foreground color is crucial. It's essential to test color combinations with accessibility tools to verify compliance. IKB may cause eye strain when used extensively, particularly for users with visual impairments. Implementing features like adjustable font sizes and alternative color schemes can improve usability. Avoid using this color for crucial interactive elements without proper contrast to ensure all users can effectively navigate and interact with the content. When implemented thoughtfully, IKB can be visually striking, but prioritizing accessibility is vital to avoid excluding users.

Shades

Digital Color Formats

RGB
0 34 176
RGB0 34 176
Red
Green
Blue
HSL
228.41deg 100% 34.51%
228.4110034.51HSL
Hue
Saturation
Lightness
HWB
228.41deg 0% 30.98%
228.41030.98HWB
Hue
Whiteness
Blackness
hex#0022B0
rgb0 34 176
hsl228.41deg 100% 34.51%
cmyk100% 80.68% 0% 30.98%
hwb228.41deg 0% 30.98%
xyz-d650.08 0.04 0.41
oklch0.3697 0.2187 264.09
oklab0.3697 -0.02 -0.22
CMYK
100% 80.68% 0% 30.98%
10080.68030.98CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.04 0.41
0.080.040.41XYZ
X
Y
Z
OKLCH
0.3697 0.2187 264.09
0.36970.2187264.09LCH
Lightness
Chroma
Hue
OKLAB
0.3697 -0.02 -0.22
0.3697-0.02-0.22LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons