International Klein Blue

#0516AE

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. This ultramarine pigment was synthetically created and registered as a trademark by Klein in 1957. The visual impact of IKB comes from its reliance on pure pigment, which gives it a remarkable luminosity and intensity. Because the color is a deep, almost pure blue, it has been associated with a sense of the infinite, spirituality, and the ethereal. In the realm of color theory, IKB stands out as a unique and historically significant hue, influencing artists, designers, and cultural movements across the globe. Its impact is still relevant today.

The hex color #0516ae, also known as International Klein Blue, presents significant accessibility challenges, especially in web design. Its very low luminance value (being a very dark blue) results in poor contrast when paired with standard text colors like black or even dark grays. This severely impacts readability for users with visual impairments. To ensure accessibility, it is crucial to use a very light color for text or interactive elements on a background of #0516ae. White (#ffffff) is often the best choice, but lighter shades of yellow or green could also work. Tools like contrast checkers should be employed to verify that the contrast ratio meets WCAG (Web Content Accessibility Guidelines) standards, aiming for a minimum of 4.5:1 for normal text and 3:1 for large text. Furthermore, avoid using this color alone to convey important information, relying instead on text labels or icons to provide additional context.

Shades

Digital Color Formats

RGB
5 22 174
RGB5 22 174
Red
Green
Blue
HSL
233.96 94.41% 35.1%
233.9694.4135.1HSL
Hue
Saturation
Lightness
HWB
233.96 1.96% 31.76%
233.961.9631.76HWB
Hue
Whiteness
Blackness
hex#0516AE
rgb5 22 174
hsl233.96 94.41% 35.1%
cmyk97.13% 87.36% 0% 31.76%
hwb233.96 1.96% 31.76%
xyz7.99 3.66 40.33
CMYK
97.13% 87.36% 0% 31.76%
97.1387.36031.76CMYK
Cyan
Magenta
Yellow
Key
XYZ
7.99 3.66 40.33
7.993.6640.33XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

HexColo.rs © 2025