International Klein Blue

#0635AE

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. This specific shade of blue was synthetically created and registered by Klein as a trademark. What sets IKB apart is its intense saturation, achieved by suspending pure color pigment in a clear synthetic resin. The visual effect of IKB is a near-total absorption of light, giving the pigment a unique depth and luminosity. Yves Klein used IKB extensively in his monochrome paintings and sculptures, aiming to evoke a sense of boundless space and spiritual experience. It has since become an iconic color, influencing various fields of art, design, and fashion.

The color #0635AE, also known as International Klein Blue, presents several accessibility considerations for web developers. Its dark hue necessitates careful attention to color contrast. When used as a background, it is crucial to pair it with very light text (white or near-white) to ensure readability, meeting WCAG (Web Content Accessibility Guidelines) standards for contrast ratios (minimum 4.5:1 for normal text and 3:1 for large text). Insufficient contrast can lead to difficulties for users with visual impairments, including those with low vision or color blindness. Avoid using this color for elements that need precise visual discrimination, such as thin lines or small icons, unless the contrast is exceptionally high. Provide alternative cues like labels or symbols alongside color-coded information to make content accessible to all users.

Shades

Digital Color Formats

RGB
6 53 174
RGB6 53 174
Red
Green
Blue
HSL
223.21deg 93.33% 35.29%
223.2193.3335.29HSL
Hue
Saturation
Lightness
HWB
223.21deg 2.35% 31.76%
223.212.3531.76HWB
Hue
Whiteness
Blackness
hex#0635AE
rgb6 53 174
hsl223.21deg 93.33% 35.29%
cmyk96.55% 69.54% 0% 31.76%
hwb223.21deg 2.35% 31.76%
xyz-d650.09 0.06 0.41
oklch0.3975 0.1967 263.56
oklab0.3975 -0.02 -0.2
CMYK
96.55% 69.54% 0% 31.76%
96.5569.54031.76CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.41
0.090.060.41XYZ
X
Y
Z
OKLCH
0.3975 0.1967 263.56
0.39750.1967263.56LCH
Lightness
Chroma
Hue
OKLAB
0.3975 -0.02 -0.2
0.3975-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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