International Klein Blue

#0130B3

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. It is renowned for its intensity and purity. Klein patented the color to preserve its unique qualities. Chemically, it is a matte ultramarine pigment. In the RGB color model, IKB is approximately R:1, G:48, B:179, which translates to the hexadecimal color code #0130B3. The color became associated with Klein's monochromatic paintings and sculptures. It symbolizes boundlessness and spirituality in his artistic vision. The unique matte finish enhances the color's depth and intensity, making it visually striking and distinct from other blue shades. Today, IKB continues to inspire artists and designers across various fields.

The hex color #0130b3, also known as International Klein Blue, presents significant accessibility challenges due to its deep saturation and low luminance. When used as a foreground color, it requires very light background colors to provide sufficient contrast for readability, especially for users with visual impairments. According to WCAG guidelines, the contrast ratio between text and background should be at least 4.5:1 for normal text and 3:1 for large text. Using #0130b3 for text on a white background fails to meet these standards. It is crucial to select appropriate color pairings to ensure content is accessible to all users. Consider using color contrast checkers to verify compliance with accessibility standards. Darker variations of blues or alternative shades with higher luminance may improve contrast while maintaining a similar aesthetic.

Shades

Digital Color Formats

RGB
1 48 179
RGB1 48 179
Red
Green
Blue
HSL
224.16deg 98.89% 35.29%
224.1698.8935.29HSL
Hue
Saturation
Lightness
HWB
224.16deg 0.39% 29.8%
224.160.3929.8HWB
Hue
Whiteness
Blackness
hex#0130B3
rgb1 48 179
hsl224.16deg 98.89% 35.29%
cmyk99.44% 73.18% 0% 29.8%
hwb224.16deg 0.39% 29.8%
xyz-d650.09 0.05 0.43
oklch0.3937 0.2089 263.59
oklab0.3937 -0.02 -0.21
CMYK
99.44% 73.18% 0% 29.8%
99.4473.18029.8CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.43
0.090.050.43XYZ
X
Y
Z
OKLCH
0.3937 0.2089 263.59
0.39370.2089263.59LCH
Lightness
Chroma
Hue
OKLAB
0.3937 -0.02 -0.21
0.3937-0.02-0.21LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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