International Klein Blue

#0736B9

About International Klein Blue

International Klein Blue, also known as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein sought to create a blue that was as pure and intense as possible, evoking a sense of boundless space and capturing the essence of the color itself. The color was officially patented as International Klein Blue in 1957. IKB is a specific shade of blue with a high level of saturation, achieved through the addition of a synthetic ultramarine pigment suspended in a clear resin. This particular combination allows the pigment to retain its intensity and luminosity, giving the color its distinctive vibrant appearance. It has become synonymous with Klein's artistic practice and has had a lasting impact on art, design, and popular culture.

The color #0736B9, also known as International Klein Blue, presents several accessibility considerations for web developers. Its dark hue results in a high contrast ratio against white text, generally exceeding the WCAG (Web Content Accessibility Guidelines) requirements for AA and AAA levels. However, when used with darker text or backgrounds, it may fail to meet minimum contrast standards, potentially causing readability issues for users with visual impairments. Therefore, it's essential to pair this color with light foreground elements or backgrounds to ensure sufficient contrast. Additionally, avoid using this color as the sole indicator of interactive elements or states. Supplement with text labels or other visual cues to ensure usability for all users, including those with color blindness. Thoughtful application of #0736B9 can create visually appealing and accessible designs.

Shades

Digital Color Formats

RGB
7 54 185
RGB7 54 185
Red
Green
Blue
HSL
224.16deg 92.71% 37.65%
224.1692.7137.65HSL
Hue
Saturation
Lightness
HWB
224.16deg 2.75% 27.45%
224.162.7527.45HWB
Hue
Whiteness
Blackness
hex#0736B9
rgb7 54 185
hsl224.16deg 92.71% 37.65%
cmyk96.22% 70.81% 0% 27.45%
hwb224.16deg 2.75% 27.45%
xyz-d650.1 0.06 0.47
oklch0.411 0.209 263.86
oklab0.411 -0.02 -0.21
CMYK
96.22% 70.81% 0% 27.45%
96.2270.81027.45CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.1 0.06 0.47
0.10.060.47XYZ
X
Y
Z
OKLCH
0.411 0.209 263.86
0.4110.209263.86LCH
Lightness
Chroma
Hue
OKLAB
0.411 -0.02 -0.21
0.411-0.02-0.21LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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