International Klein Blue

#0029C7

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep shade of blue first mixed by the French artist Yves Klein. Klein patented this color, which is known for its intense saturation and visual impact. Chemically, IKB is a matte ultramarine pigment achieved through a specific preparation and suspension in a synthetic resin. The color transcends mere aesthetics; it embodies Klein's artistic philosophy, representing boundless imagination and the infinite nature of space. Its use in art and design signifies a departure from traditional artistic expressions. The color is visually striking and memorable, making it a popular choice in various creative applications.

The hex color #0029C7, a deep and vibrant blue known as International Klein Blue (IKB), presents certain accessibility challenges, especially regarding color contrast. When used as a background color, it's crucial to pair it with a light text color, such as white (#FFFFFF) or a very pale yellow, to ensure sufficient contrast for readability, meeting WCAG (Web Content Accessibility Guidelines) standards. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Avoid using IKB with dark text colors as it will be difficult to read for users, especially those with visual impairments. Consider also providing alternative ways to distinguish content beyond color, such as using icons or text labels, to cater to users with color blindness. The luminance of #0029C7 is low, further emphasizing the need for high contrast with foreground elements.

Shades

Digital Color Formats

RGB
0 41 199
RGB0 41 199
Red
Green
Blue
HSL
227.64deg 100% 39.02%
227.6410039.02HSL
Hue
Saturation
Lightness
HWB
227.64deg 0% 21.96%
227.64021.96HWB
Hue
Whiteness
Blackness
hex#0029C7
rgb0 41 199
hsl227.64deg 100% 39.02%
cmyk100% 79.4% 0% 21.96%
hwb227.64deg 0% 21.96%
xyz-d650.11 0.06 0.55
oklch0.4066 0.2387 264.07
oklab0.4066 -0.02 -0.24
CMYK
100% 79.4% 0% 21.96%
10079.4021.96CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.11 0.06 0.55
0.110.060.55XYZ
X
Y
Z
OKLCH
0.4066 0.2387 264.07
0.40660.2387264.07LCH
Lightness
Chroma
Hue
OKLAB
0.4066 -0.02 -0.24
0.4066-0.02-0.24LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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