International Klein Blue

#0218A7

About International Klein Blue

International Klein Blue (IKB), with the hex code #0218A7, is a deep blue hue first synthesized and trademarked by the French artist Yves Klein. This color is renowned for its intense and captivating visual impact, achieved through a specific ultramarine pigment. Klein registered this color in 1957 to preserve its unique quality and impact. It's a saturated and non-reflective blue, which gives it a unique visual presence. IKB has since been adopted in various fields, including art, fashion, and design, where its striking appearance continues to make it a popular choice. The color is often associated with concepts of openness, spirituality, and infinity.

The hex color #0218A7, also known as International Klein Blue, presents significant accessibility challenges due to its very low luminance. When used as a foreground color, it requires a very light background to meet WCAG (Web Content Accessibility Guidelines) standards for contrast ratio. Text using this color on a white background fails WCAG AA and AAA standards. To ensure readability and usability, particularly for users with visual impairments, it is crucial to pair this color with much lighter shades. Adequate contrast is essential for conveying information effectively and providing a positive user experience. Tools for checking color contrast ratios should be used during the design process. Considering alternatives or modifications to the color may be necessary in some cases to improve accessibility while retaining the intended aesthetic.

Shades

Digital Color Formats

RGB
2 24 167
RGB2 24 167
Red
Green
Blue
HSL
232deg 97.63% 33.14%
23297.6333.14HSL
Hue
Saturation
Lightness
HWB
232deg 0.78% 34.51%
2320.7834.51HWB
Hue
Whiteness
Blackness
hex#0218A7
rgb2 24 167
hsl232deg 97.63% 33.14%
cmyk98.8% 85.63% 0% 34.51%
hwb232deg 0.78% 34.51%
xyz-d650.07 0.03 0.37
oklch0.3471 0.2161 264.52
oklab0.3471 -0.02 -0.22
CMYK
98.8% 85.63% 0% 34.51%
98.885.63034.51CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.03 0.37
0.070.030.37XYZ
X
Y
Z
OKLCH
0.3471 0.2161 264.52
0.34710.2161264.52LCH
Lightness
Chroma
Hue
OKLAB
0.3471 -0.02 -0.22
0.3471-0.02-0.22LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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