International Klein Blue

#0723AD

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. IKB's visual impact comes from its heavy reliance on ultramarine, as well as Klein's artistic vision. Klein patented IKB in 1957, although the formula was subsequently modified to remove a binding agent that had been reducing the pigment’s visual properties. The color is achieved by suspending pure ultramarine pigment in a clear synthetic resin, which allows the pigment to maintain its original intensity and luminosity. Klein used this color extensively in his monochrome paintings and sculptures, aiming to evoke feelings of boundlessness, spirituality, and transcendence. It has since become a recognizable and iconic color in the art world, representing Klein's artistic vision and philosophy.

The color #0723AD, a deep, saturated blue, presents several accessibility considerations. Its low luminance value (relative darkness) means it requires careful pairing with text and other interface elements to ensure sufficient contrast. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text (14pt bold or 18pt). When used as a background, #0723AD necessitates light-colored text for readability. Conversely, if used for text, a very light background is essential. Avoid using this color for crucial information if users cannot adjust color settings, as individuals with color vision deficiencies may struggle to distinguish it from similar dark hues. Consider providing alternative visual cues, such as icons or text labels, alongside color-coded information. Furthermore, testing the color scheme with accessibility tools and diverse user groups is crucial to validate its usability for everyone.

Shades

Digital Color Formats

RGB
7 35 173
RGB7 35 173
Red
Green
Blue
HSL
229.88 92.22% 35.29%
229.8892.2235.29HSL
Hue
Saturation
Lightness
HWB
229.88 2.75% 32.16%
229.882.7532.16HWB
Hue
Whiteness
Blackness
hex#0723AD
rgb7 35 173
hsl229.88 92.22% 35.29%
cmyk95.95% 79.77% 0% 32.16%
hwb229.88 2.75% 32.16%
xyz8.23 4.26 39.92
CMYK
95.95% 79.77% 0% 32.16%
95.9579.77032.16CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.23 4.26 39.92
8.234.2639.92XYZ
X
Y
Z

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