International Klein Blue

#0339B1

About International Klein Blue

International Klein Blue, also known as IKB, is a deep hue of blue first mixed by the French artist Yves Klein. The visual impact of IKB comes from its heavy reliance on ultramarine pigment, as well as Klein's artistic vision. IKB is a registered trademark of the estate of Yves Klein. This particular shade of blue is renowned for its intensity and captivating depth. Hex code #0339B1 is a digital representation of IKB. This color falls into the blue color family, known for its association with tranquility, trust, and stability. In color psychology, blue is often linked to feelings of calmness and security. The distinctive characteristic of International Klein Blue lies in its unique ultramarine pigment that maximizes the blue's visual impact.

International Klein Blue (#0339B1) offers specific accessibility considerations for web development. Due to its dark hue and strong saturation, it necessitates careful pairing with contrasting colors to ensure readability. For text, a light color such as white or a pale yellow is recommended to achieve a sufficient contrast ratio, ideally meeting WCAG (Web Content Accessibility Guidelines) AA or AAA standards. When used as a background color, lighter foreground elements are similarly crucial. Avoid pairing it with other dark or similarly saturated colors, as this can lead to visual strain and make it difficult for users with visual impairments to perceive content effectively. Testing color combinations with accessibility tools is highly advisable to validate contrast ratios and ensure compliance with accessibility best practices.

Shades

Digital Color Formats

RGB
3 57 177
RGB3 57 177
Red
Green
Blue
HSL
221.38deg 96.67% 35.29%
221.3896.6735.29HSL
Hue
Saturation
Lightness
HWB
221.38deg 1.18% 30.59%
221.381.1830.59HWB
Hue
Whiteness
Blackness
hex#0339B1
rgb3 57 177
hsl221.38deg 96.67% 35.29%
cmyk98.31% 67.8% 0% 30.59%
hwb221.38deg 1.18% 30.59%
xyz-d650.09 0.06 0.42
oklch0.4072 0.1963 262.88
oklab0.4072 -0.02 -0.19
CMYK
98.31% 67.8% 0% 30.59%
98.3167.8030.59CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.42
0.090.060.42XYZ
X
Y
Z
OKLCH
0.4072 0.1963 262.88
0.40720.1963262.88LCH
Lightness
Chroma
Hue
OKLAB
0.4072 -0.02 -0.19
0.4072-0.02-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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