International Klein Blue

#0424B0

About International Klein Blue

International Klein Blue (IKB), represented by the hex code #0424B0, is a deep, vivid blue hue that was developed by the French artist Yves Klein. It's renowned for its intense saturation and matte finish, achieved through a specific synthetic resin binder that preserves the color's brilliance. Klein sought to capture the purest expression of blue, associating it with concepts of the infinite, the spiritual, and the immaterial. He officially registered IKB as a trademark in 1957, solidifying its place in art history. Beyond its artistic significance, IKB has found applications in various fields, from fashion and design to science and technology, where its striking visual impact is highly valued. It remains a powerful symbol of creativity and innovation, inspiring artists and designers to this day.

The color #0424B0, also known as International Klein Blue, presents significant accessibility challenges, especially when used as a foreground color on a white or light background. Its dark hue results in high contrast, which can be beneficial for users with some visual impairments. However, its low luminance value (relative brightness) means it may not meet the contrast ratios recommended by WCAG (Web Content Accessibility Guidelines) for text and interactive elements. A contrast ratio of at least 4.5:1 is required for normal text and 3:1 for large text against its background. Therefore, when using this color for text or interactive elements, it is crucial to pair it with a very light color, such as white or a very pale yellow, to ensure sufficient contrast. Alternatively, consider using it for larger graphic elements where the contrast requirements are less strict. Careful consideration and testing are essential to ensure inclusive design.

Shades

Digital Color Formats

RGB
4 36 176
RGB4 36 176
Red
Green
Blue
HSL
228.84 95.56% 35.29%
228.8495.5635.29HSL
Hue
Saturation
Lightness
HWB
228.84 1.57% 30.98%
228.841.5730.98HWB
Hue
Whiteness
Blackness
hex#0424B0
rgb4 36 176
hsl228.84 95.56% 35.29%
cmyk97.73% 79.55% 0% 30.98%
hwb228.84 1.57% 30.98%
xyz8.52 4.42 41.48
CMYK
97.73% 79.55% 0% 30.98%
97.7379.55030.98CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.52 4.42 41.48
8.524.4241.48XYZ
X
Y
Z

Alternative colors

Applications

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