International Klein Blue

#021FB8

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein registered this color as a trademark in 1957. What sets IKB apart is its remarkable intensity, largely due to the use of a matte, synthetic resin binder that allows the pigment to maintain its brilliance. The color is evocative and has been associated with concepts of limitless space, the sea, and the sky. It's not just a color, but a statement—a way of expressing profound ideas through visual art. It gained prominence through Klein's monochrome paintings and sculptures, becoming a signature element of his artistic expression. The unique characteristics of this blue, and the story behind it, make it a highly recognizable and influential color in the art world and beyond.

The hex color #021fb8, representing International Klein Blue, presents significant accessibility challenges, primarily due to its low luminance. Its stark contrast against lighter backgrounds can cause eye strain, particularly for users with visual impairments. According to WCAG guidelines, this color fails to meet the minimum contrast ratio requirements for both normal text and large text, hindering readability. To enhance accessibility, consider pairing it with very light colors like #ffffff or #f0f0f0 for sufficient contrast. Alternatively, using this blue sparingly and in larger design elements rather than for text can mitigate some accessibility issues. Providing textual descriptions or alternative color schemes enhances the experience for users with color blindness or other visual limitations. Thoughtful color choices are crucial for creating inclusive and user-friendly web content.

Shades

Digital Color Formats

RGB
2 31 184
RGB2 31 184
Red
Green
Blue
HSL
230.44deg 97.85% 36.47%
230.4497.8536.47HSL
Hue
Saturation
Lightness
HWB
230.44deg 0.78% 27.84%
230.440.7827.84HWB
Hue
Whiteness
Blackness
hex#021FB8
rgb2 31 184
hsl230.44deg 97.85% 36.47%
cmyk98.91% 83.15% 0% 27.84%
hwb230.44deg 0.78% 27.84%
xyz-d650.09 0.04 0.46
oklch0.3766 0.2298 264.42
oklab0.3766 -0.02 -0.23
CMYK
98.91% 83.15% 0% 27.84%
98.9183.15027.84CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.04 0.46
0.090.040.46XYZ
X
Y
Z
OKLCH
0.3766 0.2298 264.42
0.37660.2298264.42LCH
Lightness
Chroma
Hue
OKLAB
0.3766 -0.02 -0.23
0.3766-0.02-0.23LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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