International Klein Blue

#012EB3

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. IKB's visual impact comes from its heavy reliance on ultramarine, as well as Klein's patenting of the color to maintain its unique status. This particular shade of blue, #012EB3, is a representation of IKB in the digital realm. It is created by mixing a very small amount of red and green with a significant amount of blue. In the RGB color model, it consists of 0.4% red, 11.8% green, and 70.2% blue. It is widely recognized for its use in modern art and design, and is prized for its purity and depth. The color embodies creativity and the boundless imagination.

The color #012EB3, a deep and vibrant blue, presents several accessibility considerations for web developers. Its high saturation and relatively low lightness value mean that careful attention must be paid to contrast ratios. When using this color for text, ensure that the foreground text has a sufficient contrast ratio against the blue background, ideally meeting WCAG 2.1 AA standards (a contrast ratio of 4.5:1 for normal text and 3:1 for large text). Failure to provide adequate contrast can make content difficult to read for users with visual impairments. Additionally, avoid relying solely on color to convey important information, as colorblind users may not be able to distinguish it. Consider using supplementary indicators like icons or text labels to reinforce meaning. Thoughtful implementation is crucial to ensure an inclusive and accessible user experience when employing such a strong color.

Shades

Digital Color Formats

RGB
1 46 179
RGB1 46 179
Red
Green
Blue
HSL
224.83deg 98.89% 35.29%
224.8398.8935.29HSL
Hue
Saturation
Lightness
HWB
224.83deg 0.39% 29.8%
224.830.3929.8HWB
Hue
Whiteness
Blackness
hex#012EB3
rgb1 46 179
hsl224.83deg 98.89% 35.29%
cmyk99.44% 74.3% 0% 29.8%
hwb224.83deg 0.39% 29.8%
xyz-d650.09 0.05 0.43
oklch0.3905 0.2109 263.73
oklab0.3905 -0.02 -0.21
CMYK
99.44% 74.3% 0% 29.8%
99.4474.3029.8CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.43
0.090.050.43XYZ
X
Y
Z
OKLCH
0.3905 0.2109 263.73
0.39050.2109263.73LCH
Lightness
Chroma
Hue
OKLAB
0.3905 -0.02 -0.21
0.3905-0.02-0.21LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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