International Klein Blue

#0819A9

About International Klein Blue

International Klein Blue, also known as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein patented this color to maintain its unique appearance and prevent it from being commercially reproduced without his consent. The color is known for its intense saturation and brilliance, which Klein believed captured the essence of the sky and the sea. IKB is achieved through a specific formula involving a synthetic ultramarine pigment suspended in a clear, matte synthetic resin. This combination enhances the pigment's intensity and gives the color its signature velvety texture. Klein used IKB extensively in his art, particularly in his monochrome paintings and sculptures, to evoke a sense of boundlessness and transcendence. Due to his pioneering use of this color, IKB has become a part of art history.

International Klein Blue (#0819A9) presents specific accessibility challenges due to its deep, saturated hue. When used as a background color, sufficient contrast is essential for readability. Text, especially smaller fonts, may become difficult to read if placed directly on this background without careful consideration of color pairings. A light color like white or a very pale yellow is recommended to ensure WCAG (Web Content Accessibility Guidelines) compliance for contrast ratios. Avoid using dark or similarly saturated colors for text, as they may blend into the background, making it illegible for users, particularly those with visual impairments. Proper testing with accessibility tools is crucial to guarantee readability and usability for all users. Consider using a color contrast checker to evaluate the contrast ratio between text and background. Furthermore, providing alternative styling options, such as a high-contrast mode, can significantly improve accessibility for individuals with specific visual needs.

Shades

Digital Color Formats

RGB
8 25 169
RGB8 25 169
Red
Green
Blue
HSL
233.66deg 90.96% 34.71%
233.6690.9634.71HSL
Hue
Saturation
Lightness
HWB
233.66deg 3.14% 33.73%
233.663.1433.73HWB
Hue
Whiteness
Blackness
hex#0819A9
rgb8 25 169
hsl233.66deg 90.96% 34.71%
cmyk95.27% 85.21% 0% 33.73%
hwb233.66deg 3.14% 33.73%
xyz-d650.08 0.04 0.38
oklch0.3521 0.2166 265.37
oklab0.3521 -0.02 -0.22
CMYK
95.27% 85.21% 0% 33.73%
95.2785.21033.73CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.04 0.38
0.080.040.38XYZ
X
Y
Z
OKLCH
0.3521 0.2166 265.37
0.35210.2166265.37LCH
Lightness
Chroma
Hue
OKLAB
0.3521 -0.02 -0.22
0.3521-0.02-0.22LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons