International Klein Blue

#0029C9

About International Klein Blue

International Klein Blue, represented by the hex code #0029C9, is a deep and captivating shade of blue known for its intensity and unique chromatic properties. Developed by the French artist Yves Klein in collaboration with a paint manufacturer, this color was specifically formulated to maintain its vibrancy when applied to various surfaces. Its deep tone gives it a bold and memorable presence. The color is achieved through a specific mixture of ultramarine pigment and a synthetic resin binder, ensuring the color maintains its brilliance and avoids dulling. It evokes feelings of calmness, depth, and creativity, making it a popular choice for artists and designers alike. Its particular spectral composition is designed to be as close as possible to pure ultramarine, giving it an unparalleled visual impact.

The hex color #0029c9, also known as International Klein Blue, presents some accessibility challenges due to its low luminance. When used as a foreground color against a white background, it may not meet the WCAG (Web Content Accessibility Guidelines) contrast ratio requirements, potentially making it difficult for users with visual impairments to read the text. To improve accessibility, consider pairing this color with lighter shades or using it for larger text elements. It's also crucial to provide sufficient contrast when using this color for interactive elements like buttons or links. Tools like contrast checkers can help determine if the color combination passes accessibility standards, ensuring a better user experience for everyone.

Shades

Digital Color Formats

RGB
0 41 201
RGB0 41 201
Red
Green
Blue
HSL
227.76deg 100% 39.41%
227.7610039.41HSL
Hue
Saturation
Lightness
HWB
227.76deg 0% 21.18%
227.76021.18HWB
Hue
Whiteness
Blackness
hex#0029C9
rgb0 41 201
hsl227.76deg 100% 39.41%
cmyk100% 79.6% 0% 21.18%
hwb227.76deg 0% 21.18%
xyz-d650.11 0.06 0.56
oklch0.409 0.2409 264.08
oklab0.409 -0.02 -0.24
CMYK
100% 79.6% 0% 21.18%
10079.6021.18CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.11 0.06 0.56
0.110.060.56XYZ
X
Y
Z
OKLCH
0.409 0.2409 264.08
0.4090.2409264.08LCH
Lightness
Chroma
Hue
OKLAB
0.409 -0.02 -0.24
0.409-0.02-0.24LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons