International Klein Blue

#0330B1

About International Klein Blue

International Klein Blue, often referred to as IKB, is a deep blue hue first mixed by the French artist Yves Klein. It's renowned for its remarkable purity and intensity, achieved by suspending ultramarine pigment in a synthetic resin that preserves the color's vividness. Klein patented the process in 1960 to maintain its unique visual impact. This color is not just a simple mixture; it represents Klein's artistic quest to capture the essence of the infinite and the immaterial. The color evokes a sense of depth and boundlessness, making it a powerful tool in art and design. Its historical significance and distinctive appearance have made it a highly recognizable and influential color in the art world and beyond.

The hex color #0330B1, also known as International Klein Blue, presents significant accessibility challenges, especially in web design. Its very dark hue results in low contrast when paired with lighter colors, which is crucial for readability. According to WCAG guidelines, sufficient contrast is essential for users with visual impairments. A contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. Pairing #0330B1 with white text might approach this threshold, but careful evaluation is necessary using accessibility tools. When using this color for backgrounds, ensure that all interactive elements and text meet the necessary contrast levels. Avoid using it with similar dark colors, as this will create an unreadable interface for many users. Providing alternative high-contrast themes can significantly improve accessibility for all users.

Shades

Digital Color Formats

RGB
3 48 177
RGB3 48 177
Red
Green
Blue
HSL
224.48deg 96.67% 35.29%
224.4896.6735.29HSL
Hue
Saturation
Lightness
HWB
224.48deg 1.18% 30.59%
224.481.1830.59HWB
Hue
Whiteness
Blackness
hex#0330B1
rgb3 48 177
hsl224.48deg 96.67% 35.29%
cmyk98.31% 72.88% 0% 30.59%
hwb224.48deg 1.18% 30.59%
xyz-d650.09 0.05 0.42
oklch0.3918 0.2062 263.77
oklab0.3918 -0.02 -0.2
CMYK
98.31% 72.88% 0% 30.59%
98.3172.88030.59CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.42
0.090.050.42XYZ
X
Y
Z
OKLCH
0.3918 0.2062 263.77
0.39180.2062263.77LCH
Lightness
Chroma
Hue
OKLAB
0.3918 -0.02 -0.2
0.3918-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons