International Klein Blue

#0329B0

About International Klein Blue

International Klein Blue (IKB), with the hexadecimal code #0329B0, is a deep blue hue first mixed by the French artist Yves Klein. Klein registered this color as a trademark in 1957. It's a vivid, ultramarine blue renowned for its intensity and depth. The color's unique visual impact stems from its high saturation and the matte finish often applied to objects painted with it. Klein believed that this particular shade of blue could best convey his concept of pure space and spirituality. The hue is achieved by mixing ultramarine pigment with a synthetic resin binder, which preserves the pigment's brilliance. IKB has been used extensively in art, fashion, and design, often associated with creativity, innovation, and a sense of the infinite. Its distinctiveness has made it a cultural icon, representing the artist's visionary exploration of color and form.

The hex color #0329B0, known as International Klein Blue, presents some accessibility challenges due to its low luminance. When used as a foreground color, it requires careful consideration of the background color to ensure sufficient contrast for readability, especially for users with visual impairments. A light background is highly recommended. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is required for normal text and 3:1 for large text. This color may not meet these ratios with many darker background colors. Therefore, using it for crucial text elements should be approached cautiously. It is advisable to test color combinations with accessibility tools to guarantee compliance and provide an inclusive user experience. Using this color for decorative elements or large graphical elements poses fewer accessibility concerns, but careful consideration is still advised for users with color blindness.

Shades

Digital Color Formats

RGB
3 41 176
RGB3 41 176
Red
Green
Blue
HSL
226.82deg 96.65% 35.1%
226.8296.6535.1HSL
Hue
Saturation
Lightness
HWB
226.82deg 1.18% 30.98%
226.821.1830.98HWB
Hue
Whiteness
Blackness
hex#0329B0
rgb3 41 176
hsl226.82deg 96.65% 35.1%
cmyk98.3% 76.7% 0% 30.98%
hwb226.82deg 1.18% 30.98%
xyz-d650.09 0.05 0.42
oklch0.3799 0.212 264.2
oklab0.3799 -0.02 -0.21
CMYK
98.3% 76.7% 0% 30.98%
98.376.7030.98CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.42
0.090.050.42XYZ
X
Y
Z
OKLCH
0.3799 0.212 264.2
0.37990.212264.2LCH
Lightness
Chroma
Hue
OKLAB
0.3799 -0.02 -0.21
0.3799-0.02-0.21LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons