International Klein Blue

#0120B3

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 artistic vision. The color is a specific shade of blue, achieved by mixing ultramarine pigment with a synthetic resin binder. The vividness and intensity of IKB are due to the binder's ability to suspend the pigment particles without altering their color properties. This color has been used extensively in Klein's paintings, sculptures, and performances, becoming synonymous with his artistic identity. IKB is not just a color; it's an artistic statement and is still used in art, fashion, and design to evoke a sense of the infinite and the sublime.

The hex color #0120B3, also known as International Klein Blue, presents significant accessibility challenges, particularly in web design. Its extremely dark hue results in very low contrast against typical light backgrounds like white (#FFFFFF). According to WCAG guidelines, sufficient contrast is crucial for readability and usability, especially for users with visual impairments. Therefore, using #0120B3 for text or interactive elements on a white background would fail accessibility standards. To improve accessibility, it's advisable to pair it with a much lighter color, such as a pale yellow (#FFFFE0) or a very light gray (#D3D3D3), to ensure a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Additionally, consider providing alternative visual cues, such as icons or underlines, for links and interactive elements to further enhance usability for all users.

Shades

Digital Color Formats

RGB
1 32 179
RGB1 32 179
Red
Green
Blue
HSL
229.55 98.89% 35.29%
229.5598.8935.29HSL
Hue
Saturation
Lightness
HWB
229.55 0.39% 29.8%
229.550.3929.8HWB
Hue
Whiteness
Blackness
hex#0120B3
rgb1 32 179
hsl229.55 98.89% 35.29%
cmyk99.44% 82.12% 0% 29.8%
hwb229.55 0.39% 29.8%
xyz8.67 4.29 43.02
CMYK
99.44% 82.12% 0% 29.8%
99.4482.12029.8CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.67 4.29 43.02
8.674.2943.02XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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