International Klein Blue

#0314B1

About International Klein Blue

International Klein Blue, or IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein was fascinated by the intensity of ultramarine and sought to capture the purest, most vibrant expression of blue possible. The color was synthetically created and patented by Klein in 1957 and is registered as IKB 191. IKB's visual impact stems from its high saturation and ability to evoke feelings of depth and boundlessness. It is particularly effective in art because it absorbs light, creating a sense of infinite space. The color is closely associated with Klein's monochrome paintings and sculptures and continues to influence art and design to this day. Because of its unique origins and visual qualities, IKB holds a distinctive place in art history and popular culture.

The hex color #0314B1, also known as International Klein Blue, presents significant accessibility challenges, particularly in web design. Its dark hue results in very low luminance, meaning it needs to be paired with very light text (such as 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. Using #0314B1 as a background color with darker text would fail these criteria, making content difficult or impossible to read for users with visual impairments. When using this color, careful consideration must be given to contrast and the needs of users with disabilities to ensure an inclusive design.

Shades

Digital Color Formats

RGB
3 20 177
RGB3 20 177
Red
Green
Blue
HSL
234.14 96.67% 35.29%
234.1496.6735.29HSL
Hue
Saturation
Lightness
HWB
234.14 1.18% 30.59%
234.141.1830.59HWB
Hue
Whiteness
Blackness
hex#0314B1
rgb3 20 177
hsl234.14 96.67% 35.29%
cmyk98.31% 88.7% 0% 30.59%
hwb234.14 1.18% 30.59%
xyz8.22 3.69 41.87
CMYK
98.31% 88.7% 0% 30.59%
98.3188.7030.59CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.22 3.69 41.87
8.223.6941.87XYZ
X
Y
Z

Alternative colors

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