International Klein Blue

#0332B0

About International Klein Blue

International Klein Blue (IKB) is a deep 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 sometimes disputed. IKB's visual impact comes from its intense saturation, achieved through the use of a matte, synthetic resin binder that allows the pigment to retain its brilliance. The color evokes feelings of depth, infinity, and the sublime, reflecting Klein's artistic explorations of space and spirituality. It has become an iconic color in art and design, widely recognized for its unique and powerful visual presence, and has been adopted across various creative fields, including fashion, interior design, and branding. Its distinctiveness lies in its ability to capture and reflect light in a way that few other colors can, making it a visually striking and memorable hue. The chemical composition involves a specific ultramarine pigment suspended in a unique binder to preserve the color's vibrancy.

The color #0332B0, also known as International Klein Blue, presents some accessibility challenges due to its dark hue. When used as a background color, it requires very light text (ideally white or a very pale yellow) to ensure sufficient contrast for readability. According to WCAG guidelines, the contrast ratio between text and background should be at least 4.5:1 for normal text and 3:1 for large text. Therefore, designers should carefully test the color combination to meet these standards. Tools like contrast checkers can help determine if the chosen text color provides adequate contrast. Avoid pairing #0332B0 with mid-tone colors, as this will likely result in insufficient contrast, making it difficult for users, especially those with visual impairments, to read the content effectively. Using a slightly lighter shade of blue or a darker text color might be necessary to achieve the required contrast ratio and improve overall accessibility.

Shades

Digital Color Formats

RGB
3 50 176
RGB3 50 176
Red
Green
Blue
HSL
223.7deg 96.65% 35.1%
223.796.6535.1HSL
Hue
Saturation
Lightness
HWB
223.7deg 1.18% 30.98%
223.71.1830.98HWB
Hue
Whiteness
Blackness
hex#0332B0
rgb3 50 176
hsl223.7deg 96.65% 35.1%
cmyk98.3% 71.59% 0% 30.98%
hwb223.7deg 1.18% 30.98%
xyz-d650.09 0.05 0.42
oklch0.394 0.2028 263.58
oklab0.394 -0.02 -0.2
CMYK
98.3% 71.59% 0% 30.98%
98.371.59030.98CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.42
0.090.050.42XYZ
X
Y
Z
OKLCH
0.394 0.2028 263.58
0.3940.2028263.58LCH
Lightness
Chroma
Hue
OKLAB
0.394 -0.02 -0.2
0.394-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons