International Klein Blue

#0534AF

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 registered this color as a trademark in 1957. The visual impact of IKB comes from its reliance on ultramarine pigment, as well as Klein's technique of suspending the dry pigment in a clear synthetic resin. This gives the color its particular brilliance and intensity. IKB is more than just a color; it is an artistic statement. Klein sought to capture the purest expression of blue, associating it with the immaterial and the infinite. This color has found its way into various aspects of modern design, from fashion to interior decorating, and remains a powerful and recognizable shade of blue. Because of its vividness and unique qualities, IKB is often used to evoke feelings of creativity, depth, and a sense of the sublime.

The color #0534AF, also known as International Klein Blue (IKB), presents some accessibility challenges, particularly in web design. Its dark hue means that text rendered in this color requires very light text to ensure sufficient contrast for readability. According to WCAG (Web Content Accessibility Guidelines), a contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. When using IKB, careful consideration must be given to the choice of foreground text color. White or very light shades of yellow are generally suitable choices. It's crucial to test the contrast ratio using online tools to verify compliance with accessibility standards. In scenarios where achieving sufficient contrast is difficult, consider using IKB sparingly, perhaps as a background accent with appropriately contrasting elements or in purely decorative elements where text legibility is not a primary concern. Remember, prioritizing accessibility ensures that content is usable by individuals with visual impairments, enhancing the overall user experience.

Shades

Digital Color Formats

RGB
5 52 175
RGB5 52 175
Red
Green
Blue
HSL
223.41deg 94.44% 35.29%
223.4194.4435.29HSL
Hue
Saturation
Lightness
HWB
223.41deg 1.96% 31.37%
223.411.9631.37HWB
Hue
Whiteness
Blackness
hex#0534AF
rgb5 52 175
hsl223.41deg 94.44% 35.29%
cmyk97.14% 70.29% 0% 31.37%
hwb223.41deg 1.96% 31.37%
xyz-d650.09 0.06 0.41
oklch0.3966 0.1991 263.59
oklab0.3966 -0.02 -0.2
CMYK
97.14% 70.29% 0% 31.37%
97.1470.29031.37CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.41
0.090.060.41XYZ
X
Y
Z
OKLCH
0.3966 0.1991 263.59
0.39660.1991263.59LCH
Lightness
Chroma
Hue
OKLAB
0.3966 -0.02 -0.2
0.3966-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

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