International Klein Blue

#052DAF

About International Klein Blue

International Klein Blue (IKB), represented by the hexadecimal color code #052DAF, is a deep, vivid shade of blue that was developed by the French artist Yves Klein. Klein registered this color as a trademark in 1957, emphasizing its unique and ultramarine character. IKB achieves its intensity through the suspension of pure color pigment in a synthetic resin, which allows the pigment to retain its brilliance and saturation. The color has since become synonymous with Klein's artistic explorations and is often associated with concepts of spirituality, transcendence, and the infinite. Its distinctive and mesmerizing quality makes it a visually striking and recognizable hue in art, design, and culture.

International Klein Blue, with its deep and saturated hue, presents significant accessibility challenges. Its low luminance value (relative lightness) means that it offers insufficient contrast when paired with lighter colors like white or yellow. This can make text difficult to read for individuals with low vision or color blindness. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Using International Klein Blue as a background or text color requires careful consideration and the use of significantly lighter foreground colors to ensure readability. Alternative strategies include adding a background or text shadow or using a high-contrast color combination to improve accessibility. Always test color combinations with accessibility tools to verify compliance.

Shades

Digital Color Formats

RGB
5 45 175
RGB5 45 175
Red
Green
Blue
HSL
225.88deg 94.44% 35.29%
225.8894.4435.29HSL
Hue
Saturation
Lightness
HWB
225.88deg 1.96% 31.37%
225.881.9631.37HWB
Hue
Whiteness
Blackness
hex#052DAF
rgb5 45 175
hsl225.88deg 94.44% 35.29%
cmyk97.14% 74.29% 0% 31.37%
hwb225.88deg 1.96% 31.37%
xyz-d650.09 0.05 0.41
oklch0.3851 0.2066 264.19
oklab0.3851 -0.02 -0.21
CMYK
97.14% 74.29% 0% 31.37%
97.1474.29031.37CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.41
0.090.050.41XYZ
X
Y
Z
OKLCH
0.3851 0.2066 264.19
0.38510.2066264.19LCH
Lightness
Chroma
Hue
OKLAB
0.3851 -0.02 -0.21
0.3851-0.02-0.21LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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