International Klein Blue

#0019B4

About International Klein Blue

International Klein Blue (IKB), also known as #0019B4, is a deep blue hue first mixed by the French artist Yves Klein. Klein patented this color to maintain its unique identity and association with his artwork. IKB achieves its visual impact through its intense saturation, creating a strong emotional and visual response in viewers. The color is often associated with art, modernity, and sophistication. Chemically, IKB is a matte ultramarine pigment. Its use in art and design is often intended to evoke feelings of depth, infinity, and the sublime, making it a favorite among artists seeking to convey profound concepts through color.

The hex color #0019b4, also known as International Klein Blue, presents some accessibility challenges, especially in web design. Its dark nature means it requires careful consideration of contrast ratios to ensure readability for users, particularly those with visual impairments. When using this color for text, it's crucial to pair it with a very light color such as white or a pale yellow to meet WCAG (Web Content Accessibility Guidelines) standards for sufficient contrast. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Using online contrast checkers is highly advisable to verify compliance. Additionally, avoid using this color as the sole means of conveying information, as users who are colorblind may not be able to distinguish it from other dark colors. Providing alternative visual cues, such as icons or text labels, can improve accessibility.

Shades

Digital Color Formats

RGB
0 25 180
RGB0 25 180
Red
Green
Blue
HSL
231.67 100% 35.29%
231.6710035.29HSL
Hue
Saturation
Lightness
HWB
231.67 0% 29.41%
231.67029.41HWB
Hue
Whiteness
Blackness
hex#0019B4
rgb0 25 180
hsl231.67 100% 35.29%
cmyk100% 86.11% 0% 29.41%
hwb231.67 0% 29.41%
xyz8.59 3.99 43.5
CMYK
100% 86.11% 0% 29.41%
10086.11029.41CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.59 3.99 43.5
8.593.9943.5XYZ
X
Y
Z

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