International Klein Blue

#0A21C0

General Information about International Klein Blue

International Klein Blue, represented by the hexadecimal color code #0A21C0, is a deep, intense shade of blue that is known for its vibrancy and visual impact. It was developed by the French artist Yves Klein in collaboration with a paint supplier, and it was officially patented in 1957. The color's unique quality comes from its matte finish, which enhances its intensity. It is created by suspending pure ultramarine pigment in a resin binder, resulting in a color that appears to radiate light. This color has been used extensively in Klein's artwork, particularly his monochrome paintings, sculptures, and performances. IKB seeks to evoke a sense of boundlessness and spirituality.

The hex color #0A21C0, also known as International Klein Blue, presents significant accessibility challenges, particularly for users with visual impairments. Its dark hue results in low contrast when paired with lighter text or interface elements. According to WCAG guidelines, sufficient contrast is essential for readability and usability. To ensure accessibility, web developers should avoid using #0A21C0 as a background color for light text or as a text color on a light background without careful consideration of contrast ratios. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. When using this color, consider providing alternative color schemes or high-contrast options to accommodate users with visual impairments or color blindness. It's also important to test color combinations with assistive technologies to ensure compatibility and optimal user experience. Proper use of ARIA attributes can further enhance accessibility.

Shades

Digital Color Formats

RGB
10 33 192
RGB10 33 192
Red
Green
Blue
HSL
232.42deg 90.1% 39.61%
232.4290.139.61HSL
Hue
Saturation
Lightness
HWB
232.42deg 3.92% 24.71%
232.423.9224.71HWB
Hue
Whiteness
Blackness
hex#0A21C0
rgb10 33 192
hsl232.42deg 90.1% 39.61%
cmyk94.79% 82.81% 0% 24.71%
hwb232.42deg 3.92% 24.71%
xyz-d650.1 0.05 0.5
oklch0.3903 0.236 265.25
oklab0.3903 -0.02 -0.24
CMYK
94.79% 82.81% 0% 24.71%
94.7982.81024.71CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.1 0.05 0.5
0.10.050.5XYZ
X
Y
Z
OKLCH
0.3903 0.236 265.25
0.39030.236265.25LCH
Lightness
Chroma
Hue
OKLAB
0.3903 -0.02 -0.24
0.3903-0.02-0.24LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

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