International Klein Blue

#0326B1

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, as well as Klein's matte, synthetic resin binder, which suspends the color pigment and allows the pigment to maintain its original qualities. The color is a specific shade of blue achieved by using Ultramarine pigment. Yves Klein registered this mixture as a paint formula under the name International Klein Blue (IKB) at the French national institute of industrial property (INPI) in 1957. IKB is recognized for its intense and vibrant appearance, making it a unique and influential color in the art world and beyond. Because it's so unique, it is instantly recognized.

The hex color #0326B1, also known as International Klein Blue, presents significant accessibility challenges due to its dark hue. When used as a foreground color, it demands a very light background to ensure sufficient contrast for readability, especially for users with visual impairments. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. This color may struggle to meet these ratios against many background shades. Therefore, careful consideration and testing with accessibility tools are crucial. Using this color for essential information without proper contrast can exclude users. It's imperative to pair it with appropriately light colors or provide alternative high-contrast options to ensure inclusivity.

Shades

Digital Color Formats

RGB
3 38 177
RGB3 38 177
Red
Green
Blue
HSL
227.93 96.67% 35.29%
227.9396.6735.29HSL
Hue
Saturation
Lightness
HWB
227.93 1.18% 30.59%
227.931.1830.59HWB
Hue
Whiteness
Blackness
hex#0326B1
rgb3 38 177
hsl227.93 96.67% 35.29%
cmyk98.31% 78.53% 0% 30.59%
hwb227.93 1.18% 30.59%
xyz8.67 4.58 42.02
CMYK
98.31% 78.53% 0% 30.59%
98.3178.53030.59CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.67 4.58 42.02
8.674.5842.02XYZ
X
Y
Z

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