International Klein Blue

#071CAD

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 sought to create a blue that would best represent his artistic concepts, and he worked with a Parisian paint supplier to develop a unique matte version of ultramarine. The color was officially patented as International Klein Blue (IKB) in 1957. It is renowned for its intensity and depth, and it became a signature element of Klein's monochrome paintings and sculptures. The color is created using a synthetic ultramarine pigment and a special matte synthetic resin binder, which enhances the visual impact of the pigment. This striking blue is often associated with a sense of infinity, spirituality, and the immaterial.

The hex color #071cad, also known as International Klein Blue, presents significant accessibility challenges, particularly for users with visual impairments. Its low luminance value necessitates careful consideration of contrast ratios, especially when used for text or interactive elements. 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. Given the darkness of #071cad, pairing it with a light color like #ffffff (white) is crucial to meet these standards. Furthermore, avoid using this color for crucial information without redundant cues, such as icons or labels. When using it for links, make sure to provide additional visual indicators to distinguish them from the surrounding text. Thorough testing with assistive technologies is highly recommended to ensure the content is accessible to all users.

Shades

Digital Color Formats

RGB
7 28 173
RGB7 28 173
Red
Green
Blue
HSL
232.41 92.22% 35.29%
232.4192.2235.29HSL
Hue
Saturation
Lightness
HWB
232.41 2.75% 32.16%
232.412.7532.16HWB
Hue
Whiteness
Blackness
hex#071CAD
rgb7 28 173
hsl232.41 92.22% 35.29%
cmyk95.95% 83.82% 0% 32.16%
hwb232.41 2.75% 32.16%
xyz8.05 3.89 39.86
CMYK
95.95% 83.82% 0% 32.16%
95.9583.82032.16CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.05 3.89 39.86
8.053.8939.86XYZ
X
Y
Z

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