International Klein Blue

#0A1FAA

About International Klein Blue

International Klein Blue, represented by the hexadecimal color code #0A1FAA, is a deep and highly saturated shade of blue. It's renowned for its intense, almost ultramarine appearance, possessing a unique quality that captures the eye and evokes a sense of depth and infinity. This color gained prominence through the work of French artist Yves Klein, who registered it as a trademark after collaborating with a paint supplier to achieve its distinctive matte finish. The lack of gloss enhances the pigment's intensity, making it visually striking. Its spectral data shows a strong reflectance in the blue region of the spectrum, contributing to its vibrant and captivating hue, making it an icon in the art world.

The hex color #0A1FAA, also known as International Klein Blue, presents some accessibility challenges, especially in web design. Its high saturation and relatively dark hue mean that careful consideration must be given to contrast ratios. When used as a background color, it requires very light text (white or near-white) to ensure sufficient contrast for readability, meeting WCAG guidelines for level AA and ideally AAA compliance. Conversely, if used as a text color, a very light background is similarly essential. Due to its intensity, prolonged exposure to this color as a primary UI element could cause visual fatigue. Designers should use it strategically, perhaps as an accent color or within interactive elements like buttons or links, rather than for large blocks of text or background. Testing with accessibility tools is crucial to confirm that the color choices meet the necessary contrast thresholds and provide a positive user experience for individuals with visual impairments.

Shades

Digital Color Formats

RGB
10 31 170
RGB10 31 170
Red
Green
Blue
HSL
232.13 88.89% 35.29%
232.1388.8935.29HSL
Hue
Saturation
Lightness
HWB
232.13 3.92% 33.33%
232.133.9233.33HWB
Hue
Whiteness
Blackness
hex#0A1FAA
rgb10 31 170
hsl232.13 88.89% 35.29%
cmyk94.12% 81.76% 0% 33.33%
hwb232.13 3.92% 33.33%
xyz7.87 3.95 38.38
CMYK
94.12% 81.76% 0% 33.33%
94.1281.76033.33CMYK
Cyan
Magenta
Yellow
Key
XYZ
7.87 3.95 38.38
7.873.9538.38XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

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