International Klein Blue

#0026B1

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein patented this color in 1957. What sets IKB apart is its intense saturation and vibrancy, which Klein achieved by suspending pure pigment in a clear synthetic resin. This unique formulation preserves the pigment's original qualities, resulting in a matte finish that appears exceptionally vivid. The color is particularly associated with Klein's monochrome paintings and sculptures, where he explored the potential of color to evoke emotions and spiritual experiences. IKB has become a symbol of artistic innovation and continues to inspire artists and designers across various disciplines. Its unique depth and intensity make it a recognizable and impactful color choice.

International Klein Blue (#0026B1) presents significant accessibility challenges due to its deep, saturated hue. Its low lightness value means that text or elements rendered in this color require careful consideration of contrast ratios. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is necessary for normal text and 3:1 for large text against its background to ensure readability for users with visual impairments. Given its darkness, #0026B1 generally necessitates using very light colors, such as white or pale yellow, for text or interactive elements to meet these standards. Using darker shades may render content inaccessible to many users. Testing with accessibility tools is crucial to confirm sufficient contrast and ensure usability for all individuals, including those with low vision or color blindness. Proper implementation and thoughtful design choices are essential when incorporating this vibrant blue into user interfaces to avoid creating barriers to access.

Shades

Digital Color Formats

RGB
0 38 177
RGB0 38 177
Red
Green
Blue
HSL
227.12deg 100% 34.71%
227.1210034.71HSL
Hue
Saturation
Lightness
HWB
227.12deg 0% 30.59%
227.12030.59HWB
Hue
Whiteness
Blackness
hex#0026B1
rgb0 38 177
hsl227.12deg 100% 34.71%
cmyk100% 78.53% 0% 30.59%
hwb227.12deg 0% 30.59%
xyz-d650.09 0.05 0.42
oklch0.3763 0.2164 263.98
oklab0.3763 -0.02 -0.22
CMYK
100% 78.53% 0% 30.59%
10078.53030.59CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.42
0.090.050.42XYZ
X
Y
Z
OKLCH
0.3763 0.2164 263.98
0.37630.2164263.98LCH
Lightness
Chroma
Hue
OKLAB
0.3763 -0.02 -0.22
0.3763-0.02-0.22LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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