International Klein Blue

#0A30AA

About International Klein Blue

International Klein Blue, also known as IKB, is a deep blue hue first mixed by the French artist Yves Klein. This specific shade was synthetically created and registered as a trademark by Klein. The visual impact of IKB comes from its heavy reliance on ultramarine pigment, as well as Klein's artistic vision, which is reminiscent of the clear skies of the Mediterranean. It's renowned for its intense color depth. Its ultramarine aspect makes it a staple to signify richness, imagination and infinity, often conveying a sense of serenity and depth. The color's uniqueness stems from its matte, velvety texture, which intensifies the pigment's impact. In the world of color psychology, it represents stability, peace, and confidence.

The hex color #0a30aa, also known as International Klein Blue, presents some accessibility challenges, especially in text applications. Its dark hue means that using it as a background requires very light text for sufficient contrast to meet WCAG (Web Content Accessibility Guidelines) standards. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. When using #0a30aa for text, ensure the background is a light color like white or a very pale yellow to achieve acceptable contrast. For graphical elements and user interface components, a contrast ratio of 3:1 with surrounding colors is necessary. Tools like WebAIM's contrast checker can help verify compliance. In cases where sufficient contrast cannot be achieved directly, consider using a lighter shade of blue or adding a contrasting border or background to improve readability and usability for individuals with visual impairments.

Shades

Digital Color Formats

RGB
10 48 170
RGB10 48 170
Red
Green
Blue
HSL
225.75deg 88.89% 35.29%
225.7588.8935.29HSL
Hue
Saturation
Lightness
HWB
225.75deg 3.92% 33.33%
225.753.9233.33HWB
Hue
Whiteness
Blackness
hex#0A30AA
rgb10 48 170
hsl225.75deg 88.89% 35.29%
cmyk94.12% 71.76% 0% 33.33%
hwb225.75deg 3.92% 33.33%
xyz-d650.08 0.05 0.39
oklch0.3854 0.1966 264.44
oklab0.3854 -0.02 -0.2
CMYK
94.12% 71.76% 0% 33.33%
94.1271.76033.33CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.05 0.39
0.080.050.39XYZ
X
Y
Z
OKLCH
0.3854 0.1966 264.44
0.38540.1966264.44LCH
Lightness
Chroma
Hue
OKLAB
0.3854 -0.02 -0.2
0.3854-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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