International Klein Blue

#0D1EBD

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein patented this color in 1957. The color's remarkable intensity and purity stem from its saturation with ultramarine pigment and a special synthetic resin binder that maintains the pigment's brilliance. IKB is not just a color; it's a statement, an artistic concept, and a cultural phenomenon. It represents the vastness of the sky, the depth of the ocean, and the infinite possibilities of the imagination. Its unique formulation and artistic history make it one of the most iconic and recognizable colors in the world, often associated with modernity, innovation, and boundless creativity.

The hex color #0D1EBD, also known as International Klein Blue, presents several accessibility considerations, especially in web design. Its dark hue provides a strong contrast when used against lighter backgrounds, potentially enhancing readability for users with visual impairments. However, when paired with similarly dark colors, the contrast ratio may fall below WCAG (Web Content Accessibility Guidelines) standards, making text or interactive elements difficult to discern. To ensure accessibility, it's crucial to test color combinations using contrast checkers and adhere to a minimum contrast ratio of 4.5:1 for normal text and 3:1 for large text and UI components. Employing this vibrant blue requires careful attention to its context, guaranteeing it serves to improve, rather than hinder, the user experience for everyone, including those with visual disabilities.

Shades

Digital Color Formats

RGB
13 30 189
RGB13 30 189
Red
Green
Blue
HSL
234.2deg 87.13% 39.61%
234.287.1339.61HSL
Hue
Saturation
Lightness
HWB
234.2deg 5.1% 25.88%
234.25.125.88HWB
Hue
Whiteness
Blackness
hex#0D1EBD
rgb13 30 189
hsl234.2deg 87.13% 39.61%
cmyk93.12% 84.13% 0% 25.88%
hwb234.2deg 5.1% 25.88%
xyz-d650.1 0.05 0.49
oklch0.3839 0.2344 265.69
oklab0.3839 -0.02 -0.23
CMYK
93.12% 84.13% 0% 25.88%
93.1284.13025.88CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.1 0.05 0.49
0.10.050.49XYZ
X
Y
Z
OKLCH
0.3839 0.2344 265.69
0.38390.2344265.69LCH
Lightness
Chroma
Hue
OKLAB
0.3839 -0.02 -0.23
0.3839-0.02-0.23LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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