International Klein Blue

#0536AB

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 was known for his monochrome paintings, and this particular shade of blue became his signature color. It is achieved using a matte, synthetic resin fixative that maintains the pigment's intensity. Chemically, it's based on ultramarine pigment. The color is highly saturated and vivid. The unique visual impact of IKB stems from its capacity to evoke feelings of depth, infinity, and transcendence, which is why Klein often used it to represent immateriality and spirituality in his art. It has since been used in web design, fashion, and graphic design.

The hex color #0536AB, also known as International Klein Blue, presents some accessibility challenges, particularly concerning color contrast. When used as a foreground color for text, it requires careful selection of a background color to ensure sufficient contrast for readability. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Therefore, when using #0536AB for text, lighter background colors like whites, very light grays, or pale yellows are advisable to meet accessibility standards. For user interface elements like buttons or links, ensure that the color contrast is maintained in different states (e.g., hover, focus, active) to provide a consistent and accessible experience. It is always recommended to use contrast checking tools to verify compliance with accessibility guidelines.

Shades

Digital Color Formats

RGB
5 54 171
RGB5 54 171
Red
Green
Blue
HSL
222.29deg 94.32% 34.51%
222.2994.3234.51HSL
Hue
Saturation
Lightness
HWB
222.29deg 1.96% 32.94%
222.291.9632.94HWB
Hue
Whiteness
Blackness
hex#0536AB
rgb5 54 171
hsl222.29deg 94.32% 34.51%
cmyk97.08% 68.42% 0% 32.94%
hwb222.29deg 1.96% 32.94%
xyz-d650.09 0.06 0.39
oklch0.3959 0.1919 263.23
oklab0.3959 -0.02 -0.19
CMYK
97.08% 68.42% 0% 32.94%
97.0868.42032.94CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.39
0.090.060.39XYZ
X
Y
Z
OKLCH
0.3959 0.1919 263.23
0.39590.1919263.23LCH
Lightness
Chroma
Hue
OKLAB
0.3959 -0.02 -0.19
0.3959-0.02-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons