International Klein Blue

#081FAC

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. The color's visual impact comes from its heavy reliance on ultramarine, as well as Klein's artistic use of the color, most famously in his monochrome paintings. Klein patented IKB in 1957, although there is no legal restriction to its use by other artists, only that it must be made and presented according to his formula. It has since become a distinctive and recognizable color in art, fashion, and design, representing depth, spirituality, and a sense of the infinite. Its unique vibrance and intensity continue to captivate audiences and inspire creative works across various mediums.

The color #081FAC, a deep and vibrant blue reminiscent of International Klein Blue, presents some accessibility challenges, particularly concerning color contrast. When used as a background, it's crucial to pair it with text or elements in lighter colors like white, yellow, or light gray to ensure sufficient contrast for readability, especially for users with visual impairments. A contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text (14pt bold or 18pt regular) to comply with WCAG (Web Content Accessibility Guidelines). Furthermore, avoid using this color as the sole indicator of interactive elements like links or buttons. Always provide additional cues such as underlines, borders, or icons to make these elements easily identifiable for all users, including those with color vision deficiencies. Careful consideration of color combinations and supplementary indicators is essential for creating inclusive and accessible designs when working with such a deep hue.

Shades

Digital Color Formats

RGB
8 31 172
RGB8 31 172
Red
Green
Blue
HSL
231.59 91.11% 35.29%
231.5991.1135.29HSL
Hue
Saturation
Lightness
HWB
231.59 3.14% 32.55%
231.593.1432.55HWB
Hue
Whiteness
Blackness
hex#081FAC
rgb8 31 172
hsl231.59 91.11% 35.29%
cmyk95.35% 81.98% 0% 32.55%
hwb231.59 3.14% 32.55%
xyz8.04 4.01 39.38
CMYK
95.35% 81.98% 0% 32.55%
95.3581.98032.55CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.04 4.01 39.38
8.044.0139.38XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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