International Klein Blue

#0029CA

About International Klein Blue

International Klein Blue, also known as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein patented this color in 1957. It is renowned for its intense saturation and matte finish, which enhances its visual impact. The color is achieved using a specific ultramarine pigment. Klein used IKB extensively in his monochrome paintings and sculptures, seeking to evoke feelings of boundlessness and spirituality. IKB has since become an iconic color in the art world and is often associated with creativity and innovation. Beyond its artistic significance, IKB has found applications in various fields, including fashion, design, and branding, where its bold and distinctive presence makes a strong statement.

The hex color #0029ca, also known as International Klein Blue, presents significant accessibility challenges. Its very dark hue results in extremely low contrast against white text, failing WCAG guidelines for both AA and AAA compliance. This means that a large proportion of users, including those with visual impairments, will struggle to read text displayed in white against this background. To improve accessibility, consider using a much lighter color for text or other foreground elements. Light shades of yellow, orange, or even pale blues could offer better contrast. Ensure a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text (14pt bold or 18pt regular) to meet AA standards. Using contrast checking tools is highly recommended during design and development to guarantee readability for all users. It's also crucial to avoid using this color as the sole means of conveying information, as colorblind users might miss the intended message.

Shades

Digital Color Formats

RGB
0 41 202
RGB0 41 202
Red
Green
Blue
HSL
227.82deg 100% 39.61%
227.8210039.61HSL
Hue
Saturation
Lightness
HWB
227.82deg 0% 20.78%
227.82020.78HWB
Hue
Whiteness
Blackness
hex#0029CA
rgb0 41 202
hsl227.82deg 100% 39.61%
cmyk100% 79.7% 0% 20.78%
hwb227.82deg 0% 20.78%
xyz-d650.11 0.06 0.56
oklch0.4102 0.242 264.08
oklab0.4102 -0.02 -0.24
CMYK
100% 79.7% 0% 20.78%
10079.7020.78CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.11 0.06 0.56
0.110.060.56XYZ
X
Y
Z
OKLCH
0.4102 0.242 264.08
0.41020.242264.08LCH
Lightness
Chroma
Hue
OKLAB
0.4102 -0.02 -0.24
0.4102-0.02-0.24LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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