International Klein Blue

#081CAC

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein patented this color in 1957, and it has since become a symbol of his artistic practice. IKB's intensity and purity stem from its use of ultramarine pigment suspended in a synthetic resin binder, which allows the color to retain its brilliance and depth. This specific formulation minimizes the scattering of light, resulting in a color that appears exceptionally vibrant and immersive. The color is intended to evoke a feeling of boundlessness and the sublime, reflecting Klein's interest in transcending the material world. It is mostly known as one of the most saturated colors in the color specturm

The color #081CAC, also known as International Klein Blue, presents significant accessibility challenges, particularly in web design. Its very dark hue results in a low luminance value, creating insufficient contrast when paired with similarly dark colors. According to WCAG guidelines, sufficient contrast is crucial for users with visual impairments to distinguish text and interactive elements from the background. Therefore, using #081CAC for text or key interface components requires careful consideration. Pairing it with very light colors, such as white (#FFFFFF) or very light grays, is essential to meet minimum contrast ratios. Tools like contrast checkers can help ensure compliance. Avoid using it for small text or intricate graphics where clarity is paramount. Consider providing alternative color schemes or a user-adjustable contrast setting to enhance accessibility for all users.

Shades

Digital Color Formats

RGB
8 28 172
RGB8 28 172
Red
Green
Blue
HSL
232.68 91.11% 35.29%
232.6891.1135.29HSL
Hue
Saturation
Lightness
HWB
232.68 3.14% 32.55%
232.683.1432.55HWB
Hue
Whiteness
Blackness
hex#081CAC
rgb8 28 172
hsl232.68 91.11% 35.29%
cmyk95.35% 83.72% 0% 32.55%
hwb232.68 3.14% 32.55%
xyz7.96 3.86 39.36
CMYK
95.35% 83.72% 0% 32.55%
95.3583.72032.55CMYK
Cyan
Magenta
Yellow
Key
XYZ
7.96 3.86 39.36
7.963.8639.36XYZ
X
Y
Z

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