International Klein Blue

#101BBA

About International Klein Blue

International Klein Blue (IKB), represented by the hexadecimal color code #101BBA, is a deep blue hue first mixed by the French artist Yves Klein. Klein registered this color as a trademark in 1957. What distinguishes IKB from other blues is its ultramarine pigment and the special matte, synthetic resin binder that allows the pigment to maintain its intensity and brilliance. The color evokes feelings of depth, boundlessness, and spirituality. It is often associated with art, creativity, and innovation. Its unique properties and historical significance have made it a popular choice for artists, designers, and brands seeking to convey a sense of originality and sophistication. The color's intensity is due to the binder not surrounding the pigment, which allows it to maintain its natural saturation.

The hex color #101BBA, also known as International Klein Blue, presents some accessibility challenges. Its dark hue results in a low contrast ratio against white text, potentially making it difficult for users with visual impairments to read. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. When using #101BBA for text or interactive elements, it is crucial to pair it with a light color such as white or a very light yellow to ensure sufficient contrast. Tools like contrast checkers can help determine if the color combination meets accessibility standards. Consider providing alternative high-contrast themes for users with visual impairments. Also be mindful of color blindness; ensure that essential information is not conveyed solely through this color.

Shades

Digital Color Formats

RGB
16 27 186
RGB16 27 186
Red
Green
Blue
HSL
236.12deg 84.16% 39.61%
236.1284.1639.61HSL
Hue
Saturation
Lightness
HWB
236.12deg 6.27% 27.06%
236.126.2727.06HWB
Hue
Whiteness
Blackness
hex#101BBA
rgb16 27 186
hsl236.12deg 84.16% 39.61%
cmyk91.4% 85.48% 0% 27.06%
hwb236.12deg 6.27% 27.06%
xyz-d650.09 0.04 0.47
oklch0.3778 0.2326 266.21
oklab0.3778 -0.02 -0.23
CMYK
91.4% 85.48% 0% 27.06%
91.485.48027.06CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.04 0.47
0.090.040.47XYZ
X
Y
Z
OKLCH
0.3778 0.2326 266.21
0.37780.2326266.21LCH
Lightness
Chroma
Hue
OKLAB
0.3778 -0.02 -0.23
0.3778-0.02-0.23LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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