International Klein Blue

#0038B4

About International Klein Blue

International Klein Blue, often referred to as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein registered this color as a trademark in 1957, although the trademark's validity has been debated over the years. What sets IKB apart is its particularly intense saturation achieved through the addition of a matte synthetic resin binder, which preserves the pigment's vibrancy. The color evokes feelings of depth, spirituality, and infinity, reflecting Klein's artistic exploration of the immaterial and the boundless. It has since become an iconic color in the art world, frequently used to convey a sense of the sublime and the transcendent. Today, it is a prominent color in design, fashion and art.

International Klein Blue, with its deep and saturated hue, presents both opportunities and challenges for web accessibility. When used as a background color, it's crucial to ensure sufficient contrast with foreground text to meet WCAG guidelines. A light-colored text, such as white or a very pale yellow, would be necessary to achieve a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. If using it for interactive elements, consider the color blindness. Simulate the colors in different types of color blindness to ensure the design is accessible to all. Avoid using this color to convey important information without additional visual cues, as users with visual impairments may not be able to distinguish it clearly. The color should not be the only indicator to communicate information as this is not sufficient enough. Using a combination of color, text and contrast provides better accessiblity.

Shades

Digital Color Formats

RGB
0 56 180
RGB0 56 180
Red
Green
Blue
HSL
221.33 100% 35.29%
221.3310035.29HSL
Hue
Saturation
Lightness
HWB
221.33 0% 29.41%
221.33029.41HWB
Hue
Whiteness
Blackness
hex#0038B4
rgb0 56 180
hsl221.33 100% 35.29%
cmyk100% 68.89% 0% 29.41%
hwb221.33 0% 29.41%
xyz9.65 6.12 43.85
CMYK
100% 68.89% 0% 29.41%
10068.89029.41CMYK
Cyan
Magenta
Yellow
Key
XYZ
9.65 6.12 43.85
9.656.1243.85XYZ
X
Y
Z

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