International Klein Blue

#001AB4

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. IKB's visual impact comes from its heavy reliance on ultramarine, as well as Klein's masterful use of a matte, synthetic resin binder, which allows the pigment to maintain its brilliance. Klein patented IKB in 1967, although it has now become widely accessible for use by other artists and designers. The color has become a symbol of Klein's artistic vision, representing the boundless nature of the sky and the sea. IKB is also associated with spirituality and the infinite, reflecting Klein's fascination with the immaterial. This distinctive color has had a lasting impact on the art world, influencing various artistic movements and continuing to inspire artists today. Due to the deep color, it is often used as an accent.

The accessibility of #001AB4, also known as International Klein Blue, is limited, particularly for users with visual impairments. Its dark hue results in low contrast against light backgrounds, potentially making text and interactive elements difficult to read. According to WCAG guidelines, sufficient contrast is crucial for readability. For body text, a contrast ratio of at least 4.5:1 is recommended, while larger text requires a 3:1 ratio. When using #001AB4 for text or interactive elements, it's essential to pair it with a very light color to meet these standards. Tools like contrast checkers can help evaluate compliance. Additionally, consider providing alternative visual cues, such as icons or labels, to ensure usability for all users. Remember, prioritizing accessibility ensures inclusivity and improves the user experience for everyone.

Shades

Digital Color Formats

RGB
0 26 180
RGB0 26 180
Red
Green
Blue
HSL
231.33 100% 35.29%
231.3310035.29HSL
Hue
Saturation
Lightness
HWB
231.33 0% 29.41%
231.33029.41HWB
Hue
Whiteness
Blackness
hex#001AB4
rgb0 26 180
hsl231.33 100% 35.29%
cmyk100% 85.56% 0% 29.41%
hwb231.33 0% 29.41%
xyz8.61 4.03 43.5
CMYK
100% 85.56% 0% 29.41%
10085.56029.41CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.61 4.03 43.5
8.614.0343.5XYZ
X
Y
Z

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