International Klein Blue

#031DB1

About International Klein Blue

International Klein Blue, represented by the hexadecimal color code #031DB1, is a deep and vibrant shade of blue renowned for its intensity and unique matte finish. This color was specifically developed by the French artist Yves Klein in collaboration with a Parisian paint manufacturer, emphasizing its ultramarine pigment. Klein registered this color as a trademark to preserve its unique identity and artistic significance. It embodies a sense of depth, spirituality, and boundlessness, often associated with the sky and the sea. The color became a signature element in Klein's monochromatic paintings and sculptures, aiming to evoke a sense of pure emotion and sensory experience. It has since become an iconic color in art and design, representing innovation and artistic expression.

The hex color #031DB1, also known as International Klein Blue, presents significant accessibility challenges due to its low luminance. When used as a foreground color, it requires a very light background to ensure sufficient contrast for readability, especially for users with visual impairments. According to WCAG guidelines, the contrast ratio between text and background should be at least 4.5:1 for normal text and 3:1 for large text. This deep blue hue often falls short of these requirements when paired with darker shades. Designers should carefully evaluate the color's impact on usability and consider providing alternative color schemes or high contrast modes to accommodate users with varying visual needs. Tools for checking color contrast ratios are widely available and should be used during the design process to guarantee accessibility compliance. Using this color for decorative elements, rather than crucial information display, will improve overall accessibility.

Shades

Digital Color Formats

RGB
3 29 177
RGB3 29 177
Red
Green
Blue
HSL
231.03 96.67% 35.29%
231.0396.6735.29HSL
Hue
Saturation
Lightness
HWB
231.03 1.18% 30.59%
231.031.1830.59HWB
Hue
Whiteness
Blackness
hex#031DB1
rgb3 29 177
hsl231.03 96.67% 35.29%
cmyk98.31% 83.62% 0% 30.59%
hwb231.03 1.18% 30.59%
xyz8.41 4.07 41.94
CMYK
98.31% 83.62% 0% 30.59%
98.3183.62030.59CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.41 4.07 41.94
8.414.0741.94XYZ
X
Y
Z

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