International Klein Blue

#0B36A9

About International Klein Blue

International Klein Blue, represented by the hexadecimal color code #0B36A9, is a deep and intense shade of blue that is often associated with creativity, spirituality, and intellectual pursuits. It was developed by the French artist Yves Klein and patented in 1957, becoming a signature element of his work. The color's unique quality lies in its ability to evoke a sense of depth and transcendence, drawing the viewer into a contemplative space. Its rich and saturated tone distinguishes it from other blues, making it a striking and memorable hue. This particular shade is achieved through a meticulous process that involves suspending pure blue pigment in a synthetic resin, maintaining the color's vibrancy and luminosity.

The hex color #0B36A9, also known as International Klein Blue, presents some accessibility challenges, particularly when used as a background or text color. Its relatively low luminance value means that it requires careful consideration of contrast ratios. To ensure accessibility, it is essential to pair #0B36A9 with light-colored text or elements. 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) to meet WCAG (Web Content Accessibility Guidelines) AA standards. For AAA compliance, the contrast ratios should be even higher (7:1 and 4.5:1 respectively). Tools are available to check the contrast ratio between two colors to ensure compliance. Avoid using #0B36A9 for critical interactive elements without sufficient contrast.

Shades

Digital Color Formats

RGB
11 54 169
RGB11 54 169
Red
Green
Blue
HSL
223.67deg 87.78% 35.29%
223.6787.7835.29HSL
Hue
Saturation
Lightness
HWB
223.67deg 4.31% 33.73%
223.674.3133.73HWB
Hue
Whiteness
Blackness
hex#0B36A9
rgb11 54 169
hsl223.67deg 87.78% 35.29%
cmyk93.49% 68.05% 0% 33.73%
hwb223.67deg 4.31% 33.73%
xyz-d650.09 0.06 0.38
oklch0.3949 0.1886 263.84
oklab0.3949 -0.02 -0.19
CMYK
93.49% 68.05% 0% 33.73%
93.4968.05033.73CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.38
0.090.060.38XYZ
X
Y
Z
OKLCH
0.3949 0.1886 263.84
0.39490.1886263.84LCH
Lightness
Chroma
Hue
OKLAB
0.3949 -0.02 -0.19
0.3949-0.02-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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