International Klein Blue

#0011A7

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. This specific shade of blue was developed as part of Klein's artistic exploration of color and its emotive qualities. In 1957, Klein patented this color to maintain its unique identity and ensure its use aligned with his artistic vision. The color's intensity and saturation are achieved through the use of a synthetic ultramarine pigment suspended in a clear synthetic resin, allowing the pigment to retain its brilliance. IKB is renowned for its unique visual impact, often associated with depth, infinity, and the immaterial. It has become a symbol of Klein's artistic philosophy and is widely recognized in art and design circles.

The hex color #0011a7, also known as International Klein Blue, presents significant accessibility challenges, especially in web design. Its extremely dark hue results in a low luminance value, creating poor contrast against lighter backgrounds like white or light gray. According to WCAG guidelines, sufficient contrast is crucial for users with visual impairments to perceive content effectively. Text rendered in #0011a7 on a white background would likely fail contrast ratio tests, making it difficult for users with low vision or color blindness to read. To improve accessibility, it's essential to pair #0011a7 with very light colors or use it sparingly for purely decorative elements. Consider using tools that check color contrast ratios to ensure compliance with accessibility standards. Additionally, providing alternative text descriptions for images using this color can further enhance usability for screen reader users.

Shades

Digital Color Formats

RGB
0 17 167
RGB0 17 167
Red
Green
Blue
HSL
233.89deg 100% 32.75%
233.8910032.75HSL
Hue
Saturation
Lightness
HWB
233.89deg 0% 34.51%
233.89034.51HWB
Hue
Whiteness
Blackness
hex#0011A7
rgb0 17 167
hsl233.89deg 100% 32.75%
cmyk100% 89.82% 0% 34.51%
hwb233.89deg 0% 34.51%
xyz-d650.07 0.03 0.37
oklch0.3402 0.2208 264.22
oklab0.3402 -0.02 -0.22
CMYK
100% 89.82% 0% 34.51%
10089.82034.51CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.03 0.37
0.070.030.37XYZ
X
Y
Z
OKLCH
0.3402 0.2208 264.22
0.34020.2208264.22LCH
Lightness
Chroma
Hue
OKLAB
0.3402 -0.02 -0.22
0.3402-0.02-0.22LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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