International Klein Blue

#031CB1

About International Klein Blue

International Klein Blue (IKB), also known by its hexadecimal code #031CB1, is a deep blue hue first developed by the French artist Yves Klein. Klein worked with a chemical supplier to create a matte, ultramarine pigment that was exceptionally vibrant. The color's intensity stems from its unique formulation, which suspends the pigment in a resin that minimizes light reflection. This results in a color that appears particularly saturated and visually striking. Klein patented the process in 1957, solidifying IKB's status as a distinct and recognizable color. This pigment has been extensively used in Klein's own artwork, particularly his monochrome paintings and sculptures, and has since become recognized as a symbol of modernity and artistic innovation. The captivating depth and intensity of IKB have made it influential in various fields, including art, fashion, and design.

The hex color #031CB1, also known as International Klein Blue, presents significant accessibility challenges, particularly for users with visual impairments. Its very dark hue results in extremely low contrast against lighter backgrounds, making text and other visual elements difficult to discern. According to Web Content Accessibility Guidelines (WCAG), a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. #031CB1 falls far short of these guidelines when paired with standard white (#FFFFFF). Therefore, it is imperative to use this color sparingly and judiciously. Designers should avoid using #031CB1 for body text, important UI elements, or any content where readability is crucial. If #031CB1 must be used, it should be paired with very light colors like white or yellow to try and reach a minimum contrast. Moreover, consider providing alternative color schemes that offer better contrast for users with visual impairments. Thoroughly testing color combinations with accessibility evaluation tools is highly recommended to ensure compliance with WCAG standards and to provide an inclusive user experience.

Shades

Digital Color Formats

RGB
3 28 177
RGB3 28 177
Red
Green
Blue
HSL
231.38 96.67% 35.29%
231.3896.6735.29HSL
Hue
Saturation
Lightness
HWB
231.38 1.18% 30.59%
231.381.1830.59HWB
Hue
Whiteness
Blackness
hex#031CB1
rgb3 28 177
hsl231.38 96.67% 35.29%
cmyk98.31% 84.18% 0% 30.59%
hwb231.38 1.18% 30.59%
xyz8.39 4.02 41.93
CMYK
98.31% 84.18% 0% 30.59%
98.3184.18030.59CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.39 4.02 41.93
8.394.0241.93XYZ
X
Y
Z

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