International Klein Blue

#0238B2

About International Klein Blue

International Klein Blue (IKB), with the hex code #0238B2, is a deep, vivid shade of blue originally created by the French artist Yves Klein. Klein patented this specific shade of blue to maintain its unique visual impact in his artwork. IKB is known for its intense saturation, which results from the addition of Rhodopas, a matte synthetic resin, to a standard ultramarine blue pigment. This matte finish enhances the color's depth and gives it a distinctive appearance. The color quickly became associated with Klein's signature style and is widely recognized in the art world. Its chromatic intensity distinguishes it from other blue shades and makes it stand out.

The hex color #0238B2, known as International Klein Blue, presents some accessibility challenges, particularly in web design. Its deep, saturated nature creates a low contrast against lighter backgrounds, potentially making text difficult to read for users with visual impairments. According to WCAG guidelines, sufficient contrast ratios are crucial for readability. To ensure accessibility, it's important to pair #0238B2 with very light colors like white (#FFFFFF) or pale yellow to meet minimum contrast requirements. Using tools that evaluate contrast ratios can help web developers make informed decisions. Also, avoid using this color for small text or important interactive elements without proper contrast. Considering alternative color combinations or providing options for users to adjust color schemes can significantly improve the overall accessibility of digital content that incorporates this vibrant blue.

Shades

Digital Color Formats

RGB
2 56 178
RGB2 56 178
Red
Green
Blue
HSL
221.59deg 97.78% 35.29%
221.5997.7835.29HSL
Hue
Saturation
Lightness
HWB
221.59deg 0.78% 30.2%
221.590.7830.2HWB
Hue
Whiteness
Blackness
hex#0238B2
rgb2 56 178
hsl221.59deg 97.78% 35.29%
cmyk98.88% 68.54% 0% 30.2%
hwb221.59deg 0.78% 30.2%
xyz-d650.09 0.06 0.43
oklch0.4063 0.1988 262.94
oklab0.4063 -0.02 -0.2
CMYK
98.88% 68.54% 0% 30.2%
98.8868.54030.2CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.43
0.090.060.43XYZ
X
Y
Z
OKLCH
0.4063 0.1988 262.94
0.40630.1988262.94LCH
Lightness
Chroma
Hue
OKLAB
0.4063 -0.02 -0.2
0.4063-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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