International Klein Blue

#0629AE

About International Klein Blue

International Klein Blue, often referred to as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein patented this color to maintain its uniqueness and association with his artwork. It is characterized by its intense saturation and matte finish, which enhances its visual impact. Chemically, IKB is a specific ultramarine pigment. In the art world, it is celebrated for its ability to evoke feelings of infinity, spirituality, and the sublime. Its creation and patenting highlight the intersection of art, science, and intellectual property. IKB remains an iconic color in modern art history.

The hex color #0629ae, also known as International Klein Blue, presents significant accessibility challenges, particularly concerning color contrast. When used as a background color, it requires very light text (ideally white or near-white) 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. It's crucial to test color combinations with accessibility tools to verify compliance. Due to its deep saturation, pairing #0629ae with other dark or intensely colored elements should be avoided, as this can strain the eyes and reduce comprehension. Consider offering alternative color themes or using it sparingly to ensure an inclusive and user-friendly design. Providing high contrast alternatives can greatly improve accessibility for users with visual impairments.

Shades

Digital Color Formats

RGB
6 41 174
RGB6 41 174
Red
Green
Blue
HSL
227.5deg 93.33% 35.29%
227.593.3335.29HSL
Hue
Saturation
Lightness
HWB
227.5deg 2.35% 31.76%
227.52.3531.76HWB
Hue
Whiteness
Blackness
hex#0629AE
rgb6 41 174
hsl227.5deg 93.33% 35.29%
cmyk96.55% 76.44% 0% 31.76%
hwb227.5deg 2.35% 31.76%
xyz-d650.09 0.05 0.4
oklch0.3781 0.2092 264.54
oklab0.3781 -0.02 -0.21
CMYK
96.55% 76.44% 0% 31.76%
96.5576.44031.76CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.4
0.090.050.4XYZ
X
Y
Z
OKLCH
0.3781 0.2092 264.54
0.37810.2092264.54LCH
Lightness
Chroma
Hue
OKLAB
0.3781 -0.02 -0.21
0.3781-0.02-0.21LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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