International Klein Blue

#0037B4

About International Klein Blue

International Klein Blue, often referred to as IKB, is a deep shade of blue first mixed by the French artist Yves Klein. Klein sought to create a blue that was as pure and intense as possible, evoking a sense of boundless space and depth. Chemist Edouard Adam created a synthetic ultramarine pigment that was suspended in a resin binder, maintaining the pigment's brilliance. IKB is not just a color but also a registered trademark. The color has become associated with Klein's artwork and his exploration of the infinite. It's known for its velvety texture and its ability to captivate viewers, drawing them into its depths. The color remains a significant part of art history, a symbol of Klein's unique vision.

The color #0037B4, also known as International Klein Blue, presents some accessibility challenges, especially for users with visual impairments. Its dark hue means that it requires a very light text color for sufficient contrast, ideally white or a very pale yellow. When used as a background, ensure that all text meets WCAG (Web Content Accessibility Guidelines) AA standards, which require a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Avoid using this color for small text or intricate details, as the lack of contrast can make it difficult to discern. In interactive elements, like buttons or links, provide clear visual cues beyond color alone, such as underlines or icons, to ensure usability for colorblind users. Testing with accessibility tools and real users is essential to validate the design's effectiveness.

Shades

Digital Color Formats

RGB
0 55 180
RGB0 55 180
Red
Green
Blue
HSL
221.67 100% 35.29%
221.6710035.29HSL
Hue
Saturation
Lightness
HWB
221.67 0% 29.41%
221.67029.41HWB
Hue
Whiteness
Blackness
hex#0037B4
rgb0 55 180
hsl221.67 100% 35.29%
cmyk100% 69.44% 0% 29.41%
hwb221.67 0% 29.41%
xyz9.6 6.03 43.84
CMYK
100% 69.44% 0% 29.41%
10069.44029.41CMYK
Cyan
Magenta
Yellow
Key
XYZ
9.6 6.03 43.84
9.66.0343.84XYZ
X
Y
Z

Alternative colors

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