International Klein Blue

#053AAC

About International Klein Blue

International Klein Blue, also known as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein registered this color as a trademark in 1957, although the trademark's validity has been debated over the years. What sets IKB apart is its purity and intensity. The color is achieved by suspending pure ultramarine pigment in a clear synthetic resin, which retains the pigment's full saturation. The visual effect is remarkable; the color seems to radiate an almost palpable energy. IKB is often associated with a sense of infinity, spirituality, and the sublime, as Klein sought to evoke a feeling of limitless space in his monochrome paintings and sculptures. Its unique formulation and historical significance have cemented IKB's place in the art world and beyond.

The hex color #053aac, also known as International Klein Blue (IKB), presents some accessibility challenges, particularly concerning color contrast. When used as a background color, it requires very light text (white or near-white) to ensure sufficient contrast for readability, meeting WCAG (Web Content Accessibility Guidelines) standards for Level AA and ideally Level AAA. A contrast ratio of at least 4.5:1 is needed for normal-sized text and 3:1 for large text. Using online contrast checkers is crucial to verify compliance. Avoid pairing #053aac with mid-tone or dark colors as text or interactive elements, as this will likely result in insufficient contrast. Designers must also consider users with visual impairments who may have difficulty distinguishing between colors with low contrast. Providing alternative text descriptions for images and icons is also essential. Furthermore, test designs with color blindness simulators to ensure content remains accessible to users with different types of color vision deficiencies.

Shades

Digital Color Formats

RGB
5 58 172
RGB5 58 172
Red
Green
Blue
HSL
220.96deg 94.35% 34.71%
220.9694.3534.71HSL
Hue
Saturation
Lightness
HWB
220.96deg 1.96% 32.55%
220.961.9632.55HWB
Hue
Whiteness
Blackness
hex#053AAC
rgb5 58 172
hsl220.96deg 94.35% 34.71%
cmyk97.09% 66.28% 0% 32.55%
hwb220.96deg 1.96% 32.55%
xyz-d650.09 0.06 0.4
oklch0.4043 0.1885 262.74
oklab0.4043 -0.02 -0.19
CMYK
97.09% 66.28% 0% 32.55%
97.0966.28032.55CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.4
0.090.060.4XYZ
X
Y
Z
OKLCH
0.4043 0.1885 262.74
0.40430.1885262.74LCH
Lightness
Chroma
Hue
OKLAB
0.4043 -0.02 -0.19
0.4043-0.02-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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