International Klein Blue

#0119B3

General Information about International Klein Blue

International Klein Blue (IKB), also known as #0119b3, is a deep blue hue first mixed by the French artist Yves Klein. This color is renowned for its intense and captivating quality. Klein registered IKB as a trademark in 1957, although the formula for the paint was never patented. The visual impact of IKB comes from its heavy reliance on ultramarine pigment, combined with a synthetic resin binder that allows the pigment to maintain its purity and intensity. IKB became a defining characteristic of Klein's work, who sought to create art that would capture the boundless energy of the world. He believed that pure color could evoke profound emotions and spiritual experiences. IKB remains influential in art, design, and fashion, admired for its depth and vibrancy.

The hex color #0119b3, also known as International Klein Blue, presents significant accessibility challenges, especially in web design. Its very low luminance value necessitates careful consideration of color contrast ratios. According to WCAG guidelines, sufficient contrast between text and background is crucial for readability, particularly for users with visual impairments. When using #0119b3 as a background, ensure that the foreground text is a light color such as white (#ffffff) to achieve a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Insufficient contrast can make content illegible and exclude users. Also, avoid using this color for essential visual elements like links or buttons without providing additional cues, such as underlines or icons, as color alone should not be the sole indicator of interactive elements. Careful design choices can mitigate these challenges and ensure an inclusive user experience.

Shades

Digital Color Formats

RGB
1 25 179
RGB1 25 179
Red
Green
Blue
HSL
231.91 98.89% 35.29%
231.9198.8935.29HSL
Hue
Saturation
Lightness
HWB
231.91 0.39% 29.8%
231.910.3929.8HWB
Hue
Whiteness
Blackness
hex#0119B3
rgb1 25 179
hsl231.91 98.89% 35.29%
cmyk99.44% 86.03% 0% 29.8%
hwb231.91 0.39% 29.8%
xyz8.5 3.96 42.96
CMYK
99.44% 86.03% 0% 29.8%
99.4486.03029.8CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.5 3.96 42.96
8.53.9642.96XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

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