International Klein Blue

#022FBF

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. IKB's visual impact comes from its heavy reliance on ultramarine, as well as Klein's artistic vision. The vividness of IKB is a result of the binder used, which allows the pigment to maintain its color characteristics to the greatest extent possible. Yves Klein registered this color as a trademark in 1957. Because of its rich history and visual properties, International Klein Blue has found various applications in art, design, and fashion.

The hex color #022FBF, also known as International Klein Blue, presents significant accessibility challenges. Its very low luminance value of 7 means it offers extremely poor contrast against typical light backgrounds like white (#FFFFFF). This low contrast ratio fails to meet WCAG (Web Content Accessibility Guidelines) standards for normal text (4.5:1) or large text (3:1). Consequently, using #022FBF for text on a white background, or vice versa, would render the content nearly unreadable for users with visual impairments. To improve accessibility, it's essential to pair #022FBF with a much lighter color that provides sufficient contrast. Consider using tools to evaluate color contrast and ensure compliance with accessibility standards.

Shades

Digital Color Formats

RGB
2 47 191
RGB2 47 191
Red
Green
Blue
HSL
225.71deg 97.93% 37.84%
225.7197.9337.84HSL
Hue
Saturation
Lightness
HWB
225.71deg 0.78% 25.1%
225.710.7825.1HWB
Hue
Whiteness
Blackness
hex#022FBF
rgb2 47 191
hsl225.71deg 97.93% 37.84%
cmyk98.95% 75.39% 0% 25.1%
hwb225.71deg 0.78% 25.1%
xyz-d650.1 0.06 0.5
oklch0.4058 0.2239 263.96
oklab0.4058 -0.02 -0.22
CMYK
98.95% 75.39% 0% 25.1%
98.9575.39025.1CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.1 0.06 0.5
0.10.060.5XYZ
X
Y
Z
OKLCH
0.4058 0.2239 263.96
0.40580.2239263.96LCH
Lightness
Chroma
Hue
OKLAB
0.4058 -0.02 -0.22
0.4058-0.02-0.22LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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