International Klein Blue

#0229A7

About International Klein Blue

The hex color #0229a7, also known as International Klein Blue (IKB), is a deep and intense shade of blue that was developed by the French artist Yves Klein. Klein registered this color as a trademark in 1957. IKB's unique visual impact stems from its high saturation and near-absence of other colors, which creates a sense of depth and purity. It is achieved through a specific mixture of ultramarine pigment with a synthetic resin binder that allows the pigment to maintain its intensity. In the RGB color model, #0229a7 consists of 0.8% red, 16.1% green, and 65.5% blue. It represents a distinctive hue with significant cultural and artistic importance. Its application in modern design requires a keen understanding of its strong character.

The hex color #0229a7, a deep and vibrant blue, presents some accessibility challenges, especially concerning color contrast. When used as a background color, it requires a very light text color to ensure sufficient contrast for readability, ideally achieving a contrast ratio of at least 4.5:1 as recommended by WCAG guidelines. White or very light shades of yellow or green would be appropriate choices. Conversely, using #0229a7 as a text color necessitates a very light background. It's crucial to avoid pairing this blue with dark or similarly saturated colors, as this can strain the eyes and make content difficult to perceive for users with visual impairments. Careful consideration of color pairings and contrast ratios is paramount when incorporating #0229a7 into designs to guarantee an inclusive and accessible user experience for all individuals, including those with color vision deficiencies.

Shades

Digital Color Formats

RGB
2 41 167
RGB2 41 167
Red
Green
Blue
HSL
225.82deg 97.63% 33.14%
225.8297.6333.14HSL
Hue
Saturation
Lightness
HWB
225.82deg 0.78% 34.51%
225.820.7834.51HWB
Hue
Whiteness
Blackness
hex#0229A7
rgb2 41 167
hsl225.82deg 97.63% 33.14%
cmyk98.8% 75.45% 0% 34.51%
hwb225.82deg 0.78% 34.51%
xyz-d650.08 0.04 0.37
oklch0.3692 0.2015 263.96
oklab0.3692 -0.02 -0.2
CMYK
98.8% 75.45% 0% 34.51%
98.875.45034.51CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.04 0.37
0.080.040.37XYZ
X
Y
Z
OKLCH
0.3692 0.2015 263.96
0.36920.2015263.96LCH
Lightness
Chroma
Hue
OKLAB
0.3692 -0.02 -0.2
0.3692-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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