International Klein Blue

#0426B0

About International Klein Blue

International Klein Blue, also known as IKB, is a deep blue hue first synthesized by the French artist Yves Klein. This particular shade was developed as part of Klein's artistic exploration of color and space, and he registered it as a trademark in 1957. The intensity and purity of IKB are achieved by suspending pure color pigment in a clear synthetic resin, which maintains the color's brilliance. Its unique visual impact has made it a popular choice for artistic and design applications. The hexadecimal code #0426b0 represents this distinct shade of blue in digital contexts.

The hex color #0426b0, also known as International Klein Blue, presents some accessibility challenges. Its low luminance value of 4 makes it difficult to read when used as text on a white background, resulting in a contrast ratio of approximately 5:1, below the WCAG recommended minimum of 4.5:1 for normal text. To improve accessibility, use it with lighter text colors like white or yellow, and ensure sufficient contrast. When using this color for interactive elements, provide additional cues such as borders or icons to help users with visual impairments understand the element's purpose. Consider offering alternative color schemes to cater to different visual preferences. A larger font size can also partially compensate for low contrast by increasing readability.

Shades

Digital Color Formats

RGB
4 38 176
RGB4 38 176
Red
Green
Blue
HSL
228.14 95.56% 35.29%
228.1495.5635.29HSL
Hue
Saturation
Lightness
HWB
228.14 1.57% 30.98%
228.141.5730.98HWB
Hue
Whiteness
Blackness
hex#0426B0
rgb4 38 176
hsl228.14 95.56% 35.29%
cmyk97.73% 78.41% 0% 30.98%
hwb228.14 1.57% 30.98%
xyz8.58 4.55 41.5
CMYK
97.73% 78.41% 0% 30.98%
97.7378.41030.98CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.58 4.55 41.5
8.584.5541.5XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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