International Klein Blue

#051FAE

About International Klein Blue

The hex color #051FAE, commonly known as International Klein Blue (IKB), is a deep and intense shade of blue that was developed by the French artist Yves Klein. This color is renowned for its striking vibrancy and its ability to evoke feelings of awe and wonder. Klein patented the color in 1957, and it has since become a significant part of his artistic legacy. IKB is created by mixing ultramarine pigment with a synthetic resin binder, which allows the color to maintain its luminosity and depth. The color is often associated with concepts of infinity, spirituality, and the sublime. Its unique visual properties make it a powerful tool for artists and designers looking to create a strong impact.

The hex color #051FAE, also known as International Klein Blue, presents some accessibility challenges, particularly in text applications. Due to its deep, saturated nature and relatively low luminance, it requires careful consideration of contrast ratios to ensure readability for users with visual impairments. When using this color for text, it is crucial to pair it with a light background, such as white or a very pale yellow, to achieve a contrast ratio that meets WCAG (Web Content Accessibility Guidelines) standards. A contrast ratio of at least 4.5:1 is recommended for normal-sized text and 3:1 for large text (14pt bold or 18pt regular). Avoid using #051FAE for small text or when paired with dark or similarly colored backgrounds, as this can cause eye strain and make the content inaccessible to many users. Careful testing with accessibility tools is vital to confirm compliance with accessibility standards.

Shades

Digital Color Formats

RGB
5 31 174
RGB5 31 174
Red
Green
Blue
HSL
230.77 94.41% 35.1%
230.7794.4135.1HSL
Hue
Saturation
Lightness
HWB
230.77 1.96% 31.76%
230.771.9631.76HWB
Hue
Whiteness
Blackness
hex#051FAE
rgb5 31 174
hsl230.77 94.41% 35.1%
cmyk97.13% 82.18% 0% 31.76%
hwb230.77 1.96% 31.76%
xyz8.19 4.07 40.4
CMYK
97.13% 82.18% 0% 31.76%
97.1382.18031.76CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.19 4.07 40.4
8.194.0740.4XYZ
X
Y
Z

Alternative colors

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