International Klein Blue

#0126B3

General Information about International Klein Blue (#0126B3)

International Klein Blue (IKB), also known as #0126B3, is a deep blue hue first mixed by the French artist Yves Klein. Klein registered this color as a trademark in 1957. IKB's visual impact comes from its heavy reliance on ultramarine pigment, as well as Klein's strategy of using a matte, synthetic resin binder that suspends the pigment and allows the color to achieve maximum luminosity. IKB is a vibrant and highly saturated shade of blue, often associated with depth, serenity, and artistic expression. It is frequently used in art, fashion, and design to create a bold and memorable statement. The color is achieved by taking pure ultramarine pigment and suspending it in a clear synthetic resin.

The hex color #0126B3, also known as International Klein Blue, presents significant accessibility challenges, especially in web design. Its very low lightness value (around 4%) means it offers insufficient contrast against typical light backgrounds like white or light gray. This fails to meet WCAG (Web Content Accessibility Guidelines) standards for color contrast, specifically regarding text and non-text elements. Therefore, using #0126B3 for text, icons, or interactive elements on a light background is strongly discouraged. To ensure accessibility, pair this dark blue with very light colors like white (#FFFFFF) or very light yellows to achieve 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 underlines or borders, for links and interactive elements to accommodate users with color vision deficiencies.

Shades

Digital Color Formats

RGB
1 38 179
RGB1 38 179
Red
Green
Blue
HSL
227.53 98.89% 35.29%
227.5398.8935.29HSL
Hue
Saturation
Lightness
HWB
227.53 0.39% 29.8%
227.530.3929.8HWB
Hue
Whiteness
Blackness
hex#0126B3
rgb1 38 179
hsl227.53 98.89% 35.29%
cmyk99.44% 78.77% 0% 29.8%
hwb227.53 0.39% 29.8%
xyz8.84 4.65 43.08
CMYK
99.44% 78.77% 0% 29.8%
99.4478.77029.8CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.84 4.65 43.08
8.844.6543.08XYZ
X
Y
Z

Alternative colors

Applications

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