International Klein Blue

#0C3AA8

About International Klein Blue

International Klein Blue, also known as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Its striking quality comes from its reliance on ultramarine pigment, suspended in a synthetic resin which maintains the color's brilliance. Klein registered this formula under patent, solidifying IKB as a significant element of his artistic identity and work. The color evokes feelings of depth, vastness, and the infinite, and it became central to Klein's exploration of space and immateriality. Beyond art, IKB has influenced design, fashion, and popular culture. Its distinct vibrance offers a rich and unmistakable visual statement.

The color #0C3AA8, or International Klein Blue, presents specific accessibility challenges. Its deep, saturated nature means it requires careful consideration when used for text or interactive elements. According to WCAG guidelines, sufficient contrast between foreground and background colors is essential for readability and usability, particularly for users with visual impairments. A dark blue like this necessitates light-colored text for optimal contrast. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Using color contrast checking tools can ensure compliance. Furthermore, avoid relying solely on color to convey information; provide alternative cues such as text labels or icons, as colorblind users may not perceive the intended message. Thoughtful design choices regarding contrast and redundant coding practices significantly enhance the accessibility of web content featuring #0C3AA8.

Shades

Digital Color Formats

RGB
12 58 168
RGB12 58 168
Red
Green
Blue
HSL
222.31deg 86.67% 35.29%
222.3186.6735.29HSL
Hue
Saturation
Lightness
HWB
222.31deg 4.71% 34.12%
222.314.7134.12HWB
Hue
Whiteness
Blackness
hex#0C3AA8
rgb12 58 168
hsl222.31deg 86.67% 35.29%
cmyk92.86% 65.48% 0% 34.12%
hwb222.31deg 4.71% 34.12%
xyz-d650.09 0.06 0.38
oklch0.4015 0.1825 263.32
oklab0.4015 -0.02 -0.18
CMYK
92.86% 65.48% 0% 34.12%
92.8665.48034.12CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.38
0.090.060.38XYZ
X
Y
Z
OKLCH
0.4015 0.1825 263.32
0.40150.1825263.32LCH
Lightness
Chroma
Hue
OKLAB
0.4015 -0.02 -0.18
0.4015-0.02-0.18LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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