International Klein Blue

#072FAD

About International Klein Blue

International Klein Blue (IKB), represented by the hexadecimal color code #072FAD, is a deep ultramarine blue hue first mixed by the French artist Yves Klein. Klein registered this color as a trademark in 1957, although the trademark's validity is debated. IKB's visual impact stems from its reliance on ultramarine pigment, combined with a synthetic resin binder that allows the pigment to maintain its vibrancy and intensity. This color became an integral part of Klein's artistic explorations, particularly in his monochromatic paintings and sculptures. It symbolizes the boundless and immaterial nature of space, reflecting Klein's fascination with the infinite and the sublime. Its unique chromatic quality has captivated artists, designers, and scientists alike, securing its place in the history of art and color theory.

The hex color #072FAD, also known as International Klein Blue, presents some accessibility challenges, especially in web design. Its dark hue results in low contrast when paired with lighter shades of gray. According to WCAG guidelines, sufficient contrast is crucial for readability and usability, particularly for users with visual impairments. A contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. When using #072FAD for text, it's essential to choose a very light background color, like white (#FFFFFF), to ensure compliance. Alternatively, #072FAD can be used for decorative elements or larger graphical components where the contrast requirements are less stringent. Tools like WebAIM's Contrast Checker can help determine if the color combination meets accessibility standards, promoting inclusive design practices and a better user experience.

Shades

Digital Color Formats

RGB
7 47 173
RGB7 47 173
Red
Green
Blue
HSL
225.54deg 92.22% 35.29%
225.5492.2235.29HSL
Hue
Saturation
Lightness
HWB
225.54deg 2.75% 32.16%
225.542.7532.16HWB
Hue
Whiteness
Blackness
hex#072FAD
rgb7 47 173
hsl225.54deg 92.22% 35.29%
cmyk95.95% 72.83% 0% 32.16%
hwb225.54deg 2.75% 32.16%
xyz-d650.09 0.05 0.4
oklch0.3865 0.2018 264.23
oklab0.3865 -0.02 -0.2
CMYK
95.95% 72.83% 0% 32.16%
95.9572.83032.16CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.4
0.090.050.4XYZ
X
Y
Z
OKLCH
0.3865 0.2018 264.23
0.38650.2018264.23LCH
Lightness
Chroma
Hue
OKLAB
0.3865 -0.02 -0.2
0.3865-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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