International Klein Blue

#0325B1

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 registered this color as a trademark in 1957, although the trademark's validity has sometimes been disputed. What makes IKB unique is its intensity and purity, achieved by using a matte, synthetic resin binder that suspends the color pigment and allows it to retain its brilliance. The color is visually striking and distinct, often associated with art and a specific era of artistic expression. Its distinctive quality makes it recognizable and impactful in visual applications. The pigment used to create the color is ultramarine.

The color #0325B1, or International Klein Blue, presents significant accessibility challenges, especially in web design. Its high saturation and deep hue result in a low luminance value, which means it can be difficult for users with visual impairments to perceive text or elements rendered in this color. According to WCAG guidelines, sufficient contrast between foreground and background colors is crucial for readability. Using #0325B1 as a background color necessitates pairing it with a very light text color, such as white or a pale yellow, to ensure a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Tools like contrast checkers are indispensable for verifying compliance. Furthermore, avoid using #0325B1 for critical UI elements without careful consideration of its impact on users with color vision deficiencies. Offering alternative color schemes is also a good practice.

Shades

Digital Color Formats

RGB
3 37 177
RGB3 37 177
Red
Green
Blue
HSL
228.28 96.67% 35.29%
228.2896.6735.29HSL
Hue
Saturation
Lightness
HWB
228.28 1.18% 30.59%
228.281.1830.59HWB
Hue
Whiteness
Blackness
hex#0325B1
rgb3 37 177
hsl228.28 96.67% 35.29%
cmyk98.31% 79.1% 0% 30.59%
hwb228.28 1.18% 30.59%
xyz8.63 4.52 42.01
CMYK
98.31% 79.1% 0% 30.59%
98.3179.1030.59CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.63 4.52 42.01
8.634.5242.01XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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