International Klein Blue

#052AAE

About International Klein Blue

International Klein Blue, often referred to as IKB, is a deep shade of blue first mixed by the French artist Yves Klein. IKB's visual impact comes from its heavy reliance on ultramarine pigment, as well as Klein's artistic vision. The color was intended to evoke feelings of boundlessness, and the deep blue hue creates a sense of tranquility and wonder. The color is so specific that it's actually patented and its rich tone makes it unique. The color is associated with creativity and innovation.

The color #052AAE, also known as International Klein Blue, presents some accessibility challenges. Its low luminance value of 5 results in very poor contrast against a white background, failing WCAG AAA standards for normal text. To ensure readability, especially for users with visual impairments, it's crucial to pair this color with very light shades. White text on this blue can work, but careful consideration of font size and weight is necessary. In situations where contrast is critical, such as important call-to-action buttons or informative text, a lighter, more vibrant blue might be a more accessible choice. Also, it is important to never use color as the only visual mean to convey important information.

Shades

Digital Color Formats

RGB
5 42 174
RGB5 42 174
Red
Green
Blue
HSL
226.86deg 94.41% 35.1%
226.8694.4135.1HSL
Hue
Saturation
Lightness
HWB
226.86deg 1.96% 31.76%
226.861.9631.76HWB
Hue
Whiteness
Blackness
hex#052AAE
rgb5 42 174
hsl226.86deg 94.41% 35.1%
cmyk97.13% 75.86% 0% 31.76%
hwb226.86deg 1.96% 31.76%
xyz-d650.09 0.05 0.41
oklch0.3794 0.2084 264.37
oklab0.3794 -0.02 -0.21
CMYK
97.13% 75.86% 0% 31.76%
97.1375.86031.76CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.41
0.090.050.41XYZ
X
Y
Z
OKLCH
0.3794 0.2084 264.37
0.37940.2084264.37LCH
Lightness
Chroma
Hue
OKLAB
0.3794 -0.02 -0.21
0.3794-0.02-0.21LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons