International Klein Blue

#0338B0

About International Klein Blue

International Klein Blue, represented by the hex code #0338B0, is a deep and captivating shade of blue. This color is not just any blue; it holds a special place in art history. It was developed by the French artist Yves Klein in collaboration with a Parisian paint supplier, Édouard Adam, specifically for Klein's paintings. What sets it apart is its unique ultramarine pigment and its matte, velvety finish. The color was officially patented by Klein in 1957. It's celebrated for its pure, intense, and almost ethereal quality, meant to evoke a sense of boundlessness and spiritual depth, thus being seen as more than just a pigment.

The hex color #0338B0, also known as International Klein Blue, presents some accessibility challenges, especially in web design. Its dark hue results in low contrast against similarly dark backgrounds, potentially making text and interface elements difficult to read for users with visual impairments. To ensure optimal accessibility, it is highly recommended to pair this color with light backgrounds such as white (#FFFFFF) or very light grays. Utilizing tools that assess color contrast ratios is essential to meet WCAG (Web Content Accessibility Guidelines) standards, aiming for a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Thoughtful consideration of color pairings can significantly improve the user experience for individuals with visual sensitivities.

Shades

Digital Color Formats

RGB
3 56 176
RGB3 56 176
Red
Green
Blue
HSL
221.62deg 96.65% 35.1%
221.6296.6535.1HSL
Hue
Saturation
Lightness
HWB
221.62deg 1.18% 30.98%
221.621.1830.98HWB
Hue
Whiteness
Blackness
hex#0338B0
rgb3 56 176
hsl221.62deg 96.65% 35.1%
cmyk98.3% 68.18% 0% 30.98%
hwb221.62deg 1.18% 30.98%
xyz-d650.09 0.06 0.42
oklch0.4044 0.1962 262.96
oklab0.4044 -0.02 -0.19
CMYK
98.3% 68.18% 0% 30.98%
98.368.18030.98CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.42
0.090.060.42XYZ
X
Y
Z
OKLCH
0.4044 0.1962 262.96
0.40440.1962262.96LCH
Lightness
Chroma
Hue
OKLAB
0.4044 -0.02 -0.19
0.4044-0.02-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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