International Klein Blue

#0328B1

About International Klein Blue

International Klein Blue, represented by the hex code #0328B1, is a deep, intense shade of blue that was originally created by the French artist Yves Klein. Klein sought to capture the purest expression of blue, aiming to evoke feelings of boundlessness and spirituality. He worked with a chemist to develop a unique matte finish for the pigment, enhancing its visual impact. This color has since become iconic in the art world and beyond, often associated with creativity, innovation, and a sense of the sublime. Its unique characteristics make it a favorite choice for artists, designers, and anyone seeking to make a bold statement with color. The color is often used to evoke feelings of serenity and calm.

The hex color #0328B1, also known as International Klein Blue, presents some accessibility challenges due to its deep, saturated hue. When used as a background color, it requires careful consideration of text color choices to ensure sufficient contrast. White or very light shades of yellow or green are generally recommended to provide adequate readability for users with visual impairments. The Web Content Accessibility Guidelines (WCAG) emphasize the importance of a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Using tools to evaluate color contrast is crucial to meeting these guidelines. Avoid pairing #0328B1 with darker colors or colors with similar luminance, as this can make text difficult or impossible to read for many users, including those with low vision or color blindness. Thoughtful design choices are essential to ensure inclusivity and a positive user experience.

Shades

Digital Color Formats

RGB
3 40 177
RGB3 40 177
Red
Green
Blue
HSL
227.24 96.67% 35.29%
227.2496.6735.29HSL
Hue
Saturation
Lightness
HWB
227.24 1.18% 30.59%
227.241.1830.59HWB
Hue
Whiteness
Blackness
hex#0328B1
rgb3 40 177
hsl227.24 96.67% 35.29%
cmyk98.31% 77.4% 0% 30.59%
hwb227.24 1.18% 30.59%
xyz8.73 4.71 42.04
CMYK
98.31% 77.4% 0% 30.59%
98.3177.4030.59CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.73 4.71 42.04
8.734.7142.04XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

HexColo.rs © 2025