International Klein Blue

#0C1EBE

About International Klein Blue

International Klein Blue, also known as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein registered this color as a trademark in 1957. The vividness of IKB comes from its heavy reliance on ultramarine pigment and its matte finish, which enhances the sense of depth and intensity. Klein used this color extensively in his monochrome paintings and sculptures, aiming to evoke a feeling of boundlessness and spiritual depth. The color is strongly associated with Klein's artistic explorations of the infinite and the intangible, and it remains a significant symbol in the art world. Today, IKB continues to inspire artists and designers across various disciplines.

The color #0c1ebe, also known as International Klein Blue, presents some accessibility challenges, especially in web design. Its high saturation and relatively dark hue mean that careful consideration must be given to contrast ratios. When used as a background color, it requires very light text to ensure readability. A contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text, according to WCAG guidelines. It's advisable to use tools to check the contrast ratio between #0c1ebe and any text placed on top of it. Additionally, avoid using this color for essential visual cues without providing alternative indicators, as individuals with visual impairments or color blindness might not perceive them effectively. Thoughtful use of this color, combined with appropriate contrast and redundant cues, can help create a more inclusive and accessible user experience.

Shades

Digital Color Formats

RGB
12 30 190
RGB12 30 190
Red
Green
Blue
HSL
233.93deg 88.12% 39.61%
233.9388.1239.61HSL
Hue
Saturation
Lightness
HWB
233.93deg 4.71% 25.49%
233.934.7125.49HWB
Hue
Whiteness
Blackness
hex#0C1EBE
rgb12 30 190
hsl233.93deg 88.12% 39.61%
cmyk93.68% 84.21% 0% 25.49%
hwb233.93deg 4.71% 25.49%
xyz-d650.1 0.05 0.49
oklch0.385 0.2356 265.55
oklab0.385 -0.02 -0.23
CMYK
93.68% 84.21% 0% 25.49%
93.6884.21025.49CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.1 0.05 0.49
0.10.050.49XYZ
X
Y
Z
OKLCH
0.385 0.2356 265.55
0.3850.2356265.55LCH
Lightness
Chroma
Hue
OKLAB
0.385 -0.02 -0.23
0.385-0.02-0.23LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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