International Klein Blue

#0231B2

About International Klein Blue

International Klein Blue, represented by the hexadecimal color code #0231B2, is a deep and saturated blue hue. It's named after the French artist Yves Klein, who patented the color in 1957. Klein sought to create a blue that conveyed a sense of pure space and boundlessness, achieving this through a unique matte finish that enhances the color's intensity. The pigment's chemical composition involves a synthetic ultramarine pigment suspended in a resin binder, preserving its luminosity and depth. This color is celebrated for its evocative qualities and has been widely adopted in art, fashion, and design to represent concepts of infinity, spirituality, and innovation. It continues to inspire artists and designers globally due to its unique impact.

The hex color #0231B2, also known as International Klein Blue, presents some accessibility challenges in web design. Its dark hue results in a low luminance value, which means that using it as a background color requires careful consideration of foreground text color choices. To ensure readability and accessibility, it is crucial to use a light-colored text such as white or a very pale yellow. This combination will provide sufficient contrast, meeting the WCAG (Web Content Accessibility Guidelines) standards for contrast ratios. Insufficient contrast can make content difficult to read for users with visual impairments, including those with low vision or color blindness. Tools like contrast checkers can help in verifying compliance with accessibility standards. Also avoid using this color for important visual cues without providing alternative text descriptions or visual indicators.

Shades

Digital Color Formats

RGB
2 49 178
RGB2 49 178
Red
Green
Blue
HSL
223.98deg 97.78% 35.29%
223.9897.7835.29HSL
Hue
Saturation
Lightness
HWB
223.98deg 0.78% 30.2%
223.980.7830.2HWB
Hue
Whiteness
Blackness
hex#0231B2
rgb2 49 178
hsl223.98deg 97.78% 35.29%
cmyk98.88% 72.47% 0% 30.2%
hwb223.98deg 0.78% 30.2%
xyz-d650.09 0.05 0.43
oklch0.3943 0.2065 263.61
oklab0.3943 -0.02 -0.21
CMYK
98.88% 72.47% 0% 30.2%
98.8872.47030.2CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.43
0.090.050.43XYZ
X
Y
Z
OKLCH
0.3943 0.2065 263.61
0.39430.2065263.61LCH
Lightness
Chroma
Hue
OKLAB
0.3943 -0.02 -0.21
0.3943-0.02-0.21LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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