International Klein Blue

#0931AB

About International Klein Blue

International Klein Blue, also known as IKB, is a deep blue hue first mixed by the French artist Yves Klein. It's renowned for its vivid and impactful presence, achieved through a specific formula suspending pure ultramarine pigment in a synthetic resin. Klein registered this color as a trademark to maintain its unique identity and prevent its misuse. IKB is more than just a color; it represents Klein's artistic exploration of the infinite and the immaterial. The color has been widely used in art, fashion, and design to evoke feelings of depth, spirituality, and modernity. Its intensity and singularity make it a powerful tool for creating visually striking and memorable impressions.

The color #0931AB, also known as International Klein Blue, presents specific accessibility challenges, particularly in web design. Due to its deep, saturated nature and low lightness value, it can be difficult to achieve sufficient contrast with lighter colors commonly used for text or interactive elements. To ensure readability and usability for all users, including those with visual impairments, it's essential to carefully select contrasting colors. A recommended approach involves using very light shades of yellow or white for text placed on a background of #0931AB. Tools like contrast checkers, specified by the WCAG guidelines, can help calculate contrast ratios to guarantee compliance with accessibility standards, aiming for a minimum contrast ratio of 4.5:1 for normal text and 3:1 for large text. Avoid combining #0931AB with mid-tone colors, as this would likely result in insufficient contrast and hinder readability. Thoughtful application and testing are necessary to make content accessible to all users.

Shades

Digital Color Formats

RGB
9 49 171
RGB9 49 171
Red
Green
Blue
HSL
225.19deg 90% 35.29%
225.199035.29HSL
Hue
Saturation
Lightness
HWB
225.19deg 3.53% 32.94%
225.193.5332.94HWB
Hue
Whiteness
Blackness
hex#0931AB
rgb9 49 171
hsl225.19deg 90% 35.29%
cmyk94.74% 71.35% 0% 32.94%
hwb225.19deg 3.53% 32.94%
xyz-d650.09 0.05 0.39
oklch0.3879 0.1969 264.24
oklab0.3879 -0.02 -0.2
CMYK
94.74% 71.35% 0% 32.94%
94.7471.35032.94CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.39
0.090.050.39XYZ
X
Y
Z
OKLCH
0.3879 0.1969 264.24
0.38790.1969264.24LCH
Lightness
Chroma
Hue
OKLAB
0.3879 -0.02 -0.2
0.3879-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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