International Klein Blue

#0B36A8

General Information about International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. IKB's visual impact comes from its heavy reliance on ultramarine pigment, as well as Klein's matte, synthetic resin binder, which suspends the color pigment and allows the pigment to maintain its original qualities. The hex code for IKB is #0b36a8. This blue is highly saturated and leans towards the violet end of the spectrum. It became the artist's trademark and is still managed by the Yves Klein Archives. Because of its potent impact, it's a favorite of designers and artists globally. However, due to its dark nature, consideration should be taken when using this color with contrast sensitivity in mind.

The hex color #0b36a8, also known as International Klein Blue, presents certain accessibility considerations for web developers. Due to its relatively low luminance, it's crucial to ensure sufficient contrast when used as a background or text color. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text against its background. When using #0b36a8 for text, it's advisable to pair it with light colors like white (#ffffff) or very light shades of yellow or green to meet accessibility standards. If using it as a background, ensure text and other foreground elements have sufficient contrast. Tools like WebAIM's Contrast Checker can help verify compliance with WCAG guidelines. Remember to consider users with visual impairments who may have difficulty distinguishing between colors with low contrast.

Shades

Digital Color Formats

RGB
11 54 168
RGB11 54 168
Red
Green
Blue
HSL
223.57deg 87.71% 35.1%
223.5787.7135.1HSL
Hue
Saturation
Lightness
HWB
223.57deg 4.31% 34.12%
223.574.3134.12HWB
Hue
Whiteness
Blackness
hex#0B36A8
rgb11 54 168
hsl223.57deg 87.71% 35.1%
cmyk93.45% 67.86% 0% 34.12%
hwb223.57deg 4.31% 34.12%
xyz-d650.09 0.06 0.38
oklch0.3939 0.1873 263.8
oklab0.3939 -0.02 -0.19
CMYK
93.45% 67.86% 0% 34.12%
93.4567.86034.12CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.38
0.090.060.38XYZ
X
Y
Z
OKLCH
0.3939 0.1873 263.8
0.39390.1873263.8LCH
Lightness
Chroma
Hue
OKLAB
0.3939 -0.02 -0.19
0.3939-0.02-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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