International Klein Blue

#0021B4

About International Klein Blue

International Klein Blue, also known as IKB, is a deep shade of blue that was originally conceived by the French artist Yves Klein. It is renowned for its striking intensity and unique visual impact. Klein sought to create a color that would represent his artistic vision and evoke feelings of pure emotion and spirituality. The color was synthetically created and registered as a trademark by Klein in 1957. IKB achieves its luminosity from its matte finish, which allows for a greater saturation of the blue pigment. It has since become an iconic color in the art world and continues to be used by artists and designers across various disciplines.

International Klein Blue, with its deep and intense hue, presents specific accessibility considerations for web developers. When used as a background color, it's crucial to ensure a high contrast ratio with the foreground text. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text to meet WCAG AA standards. Given the darkness of #0021B4, lighter text colors such as white or very light grays are generally necessary. Furthermore, avoid using this color for essential interface elements or links without sufficient contrast, as it can be challenging for users with visual impairments to discern. Thoughtful application of color combinations and attention to contrast are essential to provide an inclusive and accessible user experience.

Shades

Digital Color Formats

RGB
0 33 180
RGB0 33 180
Red
Green
Blue
HSL
229 100% 35.29%
22910035.29HSL
Hue
Saturation
Lightness
HWB
229 0% 29.41%
229029.41HWB
Hue
Whiteness
Blackness
hex#0021B4
rgb0 33 180
hsl229 100% 35.29%
cmyk100% 81.67% 0% 29.41%
hwb229 0% 29.41%
xyz8.78 4.38 43.56
CMYK
100% 81.67% 0% 29.41%
10081.67029.41CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.78 4.38 43.56
8.784.3843.56XYZ
X
Y
Z

Alternative colors

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