International Klein Blue

#0B3BA8

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein patented this color in 1957. The intensity of IKB is achieved through a specific preparation of a synthetic resin binder that allows the pigment to maintain its brilliance. IKB is not just a color, it is a statement. It is intended to evoke a feeling of boundless space and immersion. The color has since become a symbol of modern art and has been used in various artistic and commercial applications. It is a unique and striking color, distinguished by its depth and purity. The color's unique character is deeply linked to Yves Klein's artistic vision and his desire to capture the essence of the infinite.

The hex color #0B3BA8, also known as International Klein Blue, presents some accessibility challenges, particularly in text-based contexts. Its dark hue results in a low luminance value, requiring careful consideration of contrast ratios. According to WCAG guidelines, sufficient contrast between text and background is crucial for readability, especially for users with visual impairments. When using #0B3BA8 as a background color, it's imperative to choose a very light text color to ensure a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Insufficient contrast can render content illegible, excluding users with low vision or color blindness. Tools like contrast checkers can help web developers verify compliance with accessibility standards. Furthermore, avoid using #0B3BA8 as the sole indicator of interactive elements, as color alone should not be relied upon to convey meaning. Always provide alternative cues, such as underlines or icons, to ensure usability for all users.

Shades

Digital Color Formats

RGB
11 59 168
RGB11 59 168
Red
Green
Blue
HSL
221.66deg 87.71% 35.1%
221.6687.7135.1HSL
Hue
Saturation
Lightness
HWB
221.66deg 4.31% 34.12%
221.664.3134.12HWB
Hue
Whiteness
Blackness
hex#0B3BA8
rgb11 59 168
hsl221.66deg 87.71% 35.1%
cmyk93.45% 64.88% 0% 34.12%
hwb221.66deg 4.31% 34.12%
xyz-d650.09 0.06 0.38
oklch0.4032 0.1814 263.04
oklab0.4032 -0.02 -0.18
CMYK
93.45% 64.88% 0% 34.12%
93.4564.88034.12CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.38
0.090.060.38XYZ
X
Y
Z
OKLCH
0.4032 0.1814 263.04
0.40320.1814263.04LCH
Lightness
Chroma
Hue
OKLAB
0.4032 -0.02 -0.18
0.4032-0.02-0.18LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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