International Klein Blue

#0C1DBE

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. What sets IKB apart is its remarkably pure ultramarine quality, achieved by suspending pure pigment in a synthetic resin, which retains the pigment's brilliance. This intense saturation is visually striking and has become synonymous with Klein's artistic identity. In art, IKB is employed to evoke feelings of boundlessness, spirituality, and the infinite. Beyond the art world, IKB finds application in fashion, design, and even scientific visualization, owing to its visual impact and memorability. Its unique chromatic intensity makes it a visually captivating color across various disciplines, maintaining its allure and significance.

The hex color #0C1DBE, also known as International Klein Blue, presents significant accessibility challenges, particularly in web design. Its deep, saturated nature results in low contrast when paired with lighter colors like white or yellow, making text difficult to read for individuals with visual impairments. According to WCAG guidelines, sufficient contrast ratios are crucial for readability. A contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. When using #0C1DBE as a background, ensure that the text color provides adequate contrast. Tools like contrast checkers can help assess compliance. Furthermore, avoid using this color as the sole indicator for interactive elements, as colorblind users may not perceive the difference. Consider incorporating additional cues, such as labels or icons, to enhance accessibility.

Shades

Digital Color Formats

RGB
12 29 190
RGB12 29 190
Red
Green
Blue
HSL
234.27deg 88.12% 39.61%
234.2788.1239.61HSL
Hue
Saturation
Lightness
HWB
234.27deg 4.71% 25.49%
234.274.7125.49HWB
Hue
Whiteness
Blackness
hex#0C1DBE
rgb12 29 190
hsl234.27deg 88.12% 39.61%
cmyk93.68% 84.74% 0% 25.49%
hwb234.27deg 4.71% 25.49%
xyz-d650.1 0.05 0.49
oklch0.384 0.2363 265.56
oklab0.384 -0.02 -0.24
CMYK
93.68% 84.74% 0% 25.49%
93.6884.74025.49CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.1 0.05 0.49
0.10.050.49XYZ
X
Y
Z
OKLCH
0.384 0.2363 265.56
0.3840.2363265.56LCH
Lightness
Chroma
Hue
OKLAB
0.384 -0.02 -0.24
0.384-0.02-0.24LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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