International Klein Blue

#052EAE

General Information about International Klein Blue

International Klein Blue, also known as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Its unique characteristic lies in its intensity and purity, making it visually striking and memorable. Klein achieved this color by working with a Parisian paint supplier to develop a matte, synthetic resin binder that allowed the pigment to maintain its brilliance without losing intensity. He then patented the process in 1964. This color became a signature element of Klein's art, symbolizing his exploration of infinite space and immateriality. It has since been used across various design fields, from fashion to interior design, often associated with creativity and innovation due to its striking appearance and unique history.

The hex color #052EAE, also known as International Klein Blue, presents significant accessibility challenges, particularly in web design. Its extremely low lightness value makes it difficult to perceive for users with visual impairments, including those with low vision or color blindness. When used as text, it will not meet the contrast requirements of WCAG guidelines for normal text against a white background. Similarly, when used as a background color, pairing it with light text becomes essential to provide sufficient contrast. To ensure accessibility, designers should use contrast checking tools to verify that the contrast ratio meets the minimum requirements of 4.5:1 for normal text and 3:1 for large text. Furthermore, avoid using this color as the sole indicator of interactive elements or important information, as colorblind users may not be able to distinguish it. Always provide alternative visual cues or text labels to enhance usability for all users.

Shades

Digital Color Formats

RGB
5 46 174
RGB5 46 174
Red
Green
Blue
HSL
225.44deg 94.41% 35.1%
225.4494.4135.1HSL
Hue
Saturation
Lightness
HWB
225.44deg 1.96% 31.76%
225.441.9631.76HWB
Hue
Whiteness
Blackness
hex#052EAE
rgb5 46 174
hsl225.44deg 94.41% 35.1%
cmyk97.13% 73.56% 0% 31.76%
hwb225.44deg 1.96% 31.76%
xyz-d650.09 0.05 0.41
oklch0.3856 0.2043 264.1
oklab0.3856 -0.02 -0.2
CMYK
97.13% 73.56% 0% 31.76%
97.1373.56031.76CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.41
0.090.050.41XYZ
X
Y
Z
OKLCH
0.3856 0.2043 264.1
0.38560.2043264.1LCH
Lightness
Chroma
Hue
OKLAB
0.3856 -0.02 -0.2
0.3856-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons