International Klein Blue

#012AB3

About International Klein Blue

The hex color #012ab3, often referred to as International Klein Blue (IKB), is a deep and intense shade of blue. It is a pure, ultramarine blue that possesses a remarkable depth and luminosity. This color is named after the French artist Yves Klein, who patented the unique formulation in 1960. IKB is achieved by suspending ultramarine pigment in a synthetic resin, which allows the color to retain its brilliance and intensity. In the RGB color model, #012ab3 is composed of 0.4% red, 16.9% green, and 70.2% blue. In the CMYK color model, it is composed of 99% cyan, 76% magenta, 0% yellow, and 30% black. This gives it a distinctive place in the color spectrum.

The hex color #012ab3, a deep shade of blue, presents accessibility challenges, particularly for users with visual impairments. Its low lightness value necessitates careful consideration of contrast ratios when used for text or interactive elements. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is required for normal text and 3:1 for large text against its background. Therefore, when employing #012ab3, pairing it with light colors like white (#ffffff) or very light grays is crucial to ensure readability and usability. It's recommended to use contrast checking tools to verify compliance with accessibility standards. Furthermore, avoid relying solely on color to convey information, and provide alternative cues such as text labels or icons. Employing ARIA attributes can also enhance accessibility by providing additional semantic information to assistive technologies.

Shades

Digital Color Formats

RGB
1 42 179
RGB1 42 179
Red
Green
Blue
HSL
226.18 98.89% 35.29%
226.1898.8935.29HSL
Hue
Saturation
Lightness
HWB
226.18 0.39% 29.8%
226.180.3929.8HWB
Hue
Whiteness
Blackness
hex#012AB3
rgb1 42 179
hsl226.18 98.89% 35.29%
cmyk99.44% 76.54% 0% 29.8%
hwb226.18 0.39% 29.8%
xyz8.98 4.92 43.12
CMYK
99.44% 76.54% 0% 29.8%
99.4476.54029.8CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.98 4.92 43.12
8.984.9243.12XYZ
X
Y
Z

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