International Klein Blue

#051BAC

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. He developed this specific shade of blue in collaboration with a Parisian paint dealer, Edouard Adam, to capture and represent the intensity and purity of his artistic vision. IKB's distinctive matte finish further enhances its impact, preventing the color from being diluted by reflected light. The color was officially patented in 1957, becoming a signature element of Klein's monochromatic paintings and sculptures. This particular blue is celebrated for its ability to evoke feelings of depth, infinity, and transcendence, making it a popular choice in various artistic and design contexts. The hex code for International Klein Blue is #051BAC.

The hex color #051bac, also known as International Klein Blue, presents several accessibility considerations for web developers. Its dark hue offers inherent contrast against lighter backgrounds, which is beneficial for users with low vision. However, when used as text, it's crucial to ensure sufficient contrast against the background color, adhering to WCAG (Web Content Accessibility Guidelines) standards for contrast ratios (at least 4.5:1 for normal text and 3:1 for large text). Using online contrast checkers is highly recommended to verify compliance. Additionally, avoid relying solely on color to convey important information, as colorblind users may not perceive the intended message. Providing alternative cues, such as text labels or icons, ensures inclusivity. When used for interactive elements like buttons or links, focus states should be clearly defined to aid keyboard navigation and provide clear visual feedback for all users.

Shades

Digital Color Formats

RGB
5 27 172
RGB5 27 172
Red
Green
Blue
HSL
232.1deg 94.35% 34.71%
232.194.3534.71HSL
Hue
Saturation
Lightness
HWB
232.1deg 1.96% 32.55%
232.11.9632.55HWB
Hue
Whiteness
Blackness
hex#051BAC
rgb5 27 172
hsl232.1deg 94.35% 34.71%
cmyk97.09% 84.3% 0% 32.55%
hwb232.1deg 1.96% 32.55%
xyz-d650.08 0.04 0.39
oklch0.3575 0.219 264.89
oklab0.3575 -0.02 -0.22
CMYK
97.09% 84.3% 0% 32.55%
97.0984.3032.55CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.04 0.39
0.080.040.39XYZ
X
Y
Z
OKLCH
0.3575 0.219 264.89
0.35750.219264.89LCH
Lightness
Chroma
Hue
OKLAB
0.3575 -0.02 -0.22
0.3575-0.02-0.22LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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