International Klein Blue

#0D28AF

General Information about International Klein Blue

International Klein Blue, with the hex code #0D28AF, is a deep ultramarine blue hue renowned for its intensity and impact. Developed by the French artist Yves Klein in collaboration with a Parisian paint dealer, it was specifically created to visually capture the artist's unique monochrome paintings. This particular shade is known for its high saturation and luminosity, which gives the color an almost ethereal quality. Its unique chromatic properties make it visually distinct from other shades of blue. In color theory, it can be categorized as a cool color that evokes feelings of calmness, serenity, and introspection. The pigment used is a synthetic ultramarine with a special binder that enhances its brilliance and depth. It stands as a testament to the intersection of art, science, and color perception, making it an iconic color in the world of art and design.

The hex color #0d28af, also known as International Klein Blue, presents some accessibility challenges, especially for users with visual impairments. Its relatively low luminance value of 16.21 makes it difficult to achieve sufficient contrast against lighter backgrounds, potentially failing WCAG (Web Content Accessibility Guidelines) AA or AAA compliance. When used as text, it's crucial to pair it with very light colors like white (#ffffff) or very pale yellow to ensure readability. Avoid using it for small text or essential interface elements if contrast cannot be guaranteed. Furthermore, consider providing alternative color schemes for users who may have difficulty distinguishing this color. Testing with accessibility tools is vital to ensure compliance and optimal user experience. Also, be mindful of the emotional impact, as deep blues can sometimes be perceived differently across cultures.

Shades

Digital Color Formats

RGB
13 40 175
RGB13 40 175
Red
Green
Blue
HSL
230deg 86.17% 36.86%
23086.1736.86HSL
Hue
Saturation
Lightness
HWB
230deg 5.1% 31.37%
2305.131.37HWB
Hue
Whiteness
Blackness
hex#0D28AF
rgb13 40 175
hsl230deg 86.17% 36.86%
cmyk92.57% 77.14% 0% 31.37%
hwb230deg 5.1% 31.37%
xyz-d650.09 0.05 0.41
oklch0.3792 0.2103 265.47
oklab0.3792 -0.02 -0.21
CMYK
92.57% 77.14% 0% 31.37%
92.5777.14031.37CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.41
0.090.050.41XYZ
X
Y
Z
OKLCH
0.3792 0.2103 265.47
0.37920.2103265.47LCH
Lightness
Chroma
Hue
OKLAB
0.3792 -0.02 -0.21
0.3792-0.02-0.21LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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