International Klein Blue

#0233B2

About International Klein Blue

International Klein Blue, often referred to as IKB, is a deep blue hue that was conceived by the French artist Yves Klein. This specific shade of blue was chemically developed to perfectly capture Klein's artistic vision and his interpretation of the color. IKB is known for its intense saturation and distinctive matte finish, making it stand out from other blue colors. Klein believed that this particular blue had a unique ability to convey feelings of spirituality and the infinite. He famously used IKB in his monochrome paintings, sculptures, and performances, solidifying its place in art history. The color is now a registered trademark. The distinctive characteristics make the hue more than just a color, but a concept of art.

The hex color #0233B2, also known as International Klein Blue, presents several accessibility considerations for web developers. Due to its deep, saturated hue, it's crucial to ensure sufficient contrast when used as a background or text color. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is required for normal text and 3:1 for large text. When using #0233B2 for text, lighter colors like white or pale yellows are recommended for readability. Avoid pairing it with other dark colors, as this can make text difficult to discern. In user interface design, consider providing alternative color schemes or a high-contrast mode for users with visual impairments. It's also essential to test the color combination with accessibility tools to ensure compliance with accessibility standards and guidelines, promoting an inclusive user experience.

Shades

Digital Color Formats

RGB
2 51 178
RGB2 51 178
Red
Green
Blue
HSL
223.3deg 97.78% 35.29%
223.397.7835.29HSL
Hue
Saturation
Lightness
HWB
223.3deg 0.78% 30.2%
223.30.7830.2HWB
Hue
Whiteness
Blackness
hex#0233B2
rgb2 51 178
hsl223.3deg 97.78% 35.29%
cmyk98.88% 71.35% 0% 30.2%
hwb223.3deg 0.78% 30.2%
xyz-d650.09 0.06 0.43
oklch0.3976 0.2043 263.44
oklab0.3976 -0.02 -0.2
CMYK
98.88% 71.35% 0% 30.2%
98.8871.35030.2CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.43
0.090.060.43XYZ
X
Y
Z
OKLCH
0.3976 0.2043 263.44
0.39760.2043263.44LCH
Lightness
Chroma
Hue
OKLAB
0.3976 -0.02 -0.2
0.3976-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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