International Klein Blue

#001AB2

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein patented this color in 1957, seeking to maintain its unique and vivid character. The color's intensity comes from its high saturation and its reliance on ultramarine pigments. IKB is visually striking and often associated with art, innovation, and a sense of depth. It has been used in various artistic and commercial applications, including paintings, fashion, and product design. Its unique history and visual impact make it a distinctive and recognizable color. It is achieved by suspending pure ultramarine pigment in a clear synthetic resin, allowing the pigment to maintain its brilliance.

The hex color #001ab2, also known as International Klein Blue, presents accessibility challenges due to its deep, saturated hue. When used as a background color, it requires careful selection of foreground text to ensure sufficient contrast. White or very light shades of yellow or green are often necessary to meet WCAG (Web Content Accessibility Guidelines) standards for readability. Smaller text sizes may be particularly problematic, necessitating higher contrast ratios. In user interface design, avoid using this color for essential interactive elements without thorough testing. Consider providing alternative color schemes that offer better contrast options for users with visual impairments. Tools like contrast checkers can help assess the color combination's accessibility. This color should also be used with caution in data visualizations to ensure all users can differentiate between elements. Providing text labels or using patterns in conjunction with color can enhance accessibility for those with color vision deficiencies.

Shades

Digital Color Formats

RGB
0 26 178
RGB0 26 178
Red
Green
Blue
HSL
231.24deg 100% 34.9%
231.2410034.9HSL
Hue
Saturation
Lightness
HWB
231.24deg 0% 30.2%
231.24030.2HWB
Hue
Whiteness
Blackness
hex#001AB2
rgb0 26 178
hsl231.24deg 100% 34.9%
cmyk100% 85.39% 0% 30.2%
hwb231.24deg 0% 30.2%
xyz-d650.08 0.04 0.42
oklch0.3631 0.2271 264.22
oklab0.3631 -0.02 -0.23
CMYK
100% 85.39% 0% 30.2%
10085.39030.2CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.04 0.42
0.080.040.42XYZ
X
Y
Z
OKLCH
0.3631 0.2271 264.22
0.36310.2271264.22LCH
Lightness
Chroma
Hue
OKLAB
0.3631 -0.02 -0.23
0.3631-0.02-0.23LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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