International Klein Blue

#0224B2

About International Klein Blue

International Klein Blue, often referred to as IKB, is a deep hue of blue first mixed by the French artist Yves Klein. Klein patented this color in 1957. The visual impact of IKB comes from its heavy reliance on ultramarine pigment, as well as Klein's intuitive sense of visual composition. The synthetic ultramarine is produced by heating a mixture of clay, sodium carbonate, and sulfur in a kiln. The process results in a vibrant blue pigment, which when combined with a matte synthetic resin, retains its brilliance and intensity. Klein wanted to achieve the truest expression of blue, free from the distractions of surface texture and reflection. IKB is often associated with feelings of infinity, spirituality, and the boundless expanse of the sky and sea.

The hex color #0224B2, also known as International Klein Blue, presents some accessibility challenges, particularly concerning color contrast. When used as a background color, it necessitates very light text colors to meet WCAG (Web Content Accessibility Guidelines) standards for readability. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Ensuring sufficient contrast is crucial for users with visual impairments. Using tools to test color contrast ratios is highly advisable during web design. Also, avoid using this color as a primary means of conveying information, as individuals with color blindness may not perceive it accurately. Providing alternative cues, such as text labels or icons, is important for inclusive design. Proper planning ensures that the striking visual appeal of this blue does not come at the expense of accessibility.

Shades

Digital Color Formats

RGB
2 36 178
RGB2 36 178
Red
Green
Blue
HSL
228.41 97.78% 35.29%
228.4197.7835.29HSL
Hue
Saturation
Lightness
HWB
228.41 0.78% 30.2%
228.410.7830.2HWB
Hue
Whiteness
Blackness
hex#0224B2
rgb2 36 178
hsl228.41 97.78% 35.29%
cmyk98.88% 79.78% 0% 30.2%
hwb228.41 0.78% 30.2%
xyz8.69 4.49 42.53
CMYK
98.88% 79.78% 0% 30.2%
98.8879.78030.2CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.69 4.49 42.53
8.694.4942.53XYZ
X
Y
Z

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