International Klein Blue

#0227B2

About International Klein Blue

International Klein Blue, also known as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein patented this color in 1957. The intense color was achieved by using a matte, synthetic resin binder that allowed the pigment's pure color to maintain its vibrancy. The visual effect of IKB comes from its heavy reliance on ultramarine, a pigment derived from lapis lazuli. Its unique characteristics arise from its specific preparation and binder which suspends the color pigment and allows the pigment to retain its original qualities. The color is described as having a strong visual impact because of its unique preparation.

The hex color #0227B2, also known as International Klein Blue, presents some accessibility challenges due to its relatively dark nature. When used as a background color, it's crucial to ensure that the foreground text has sufficient contrast to meet WCAG (Web Content Accessibility Guidelines) standards. A contrast ratio of at least 4.5:1 for normal text and 3:1 for large text is recommended. Lighter colors like white, yellow, or light gray would generally provide adequate contrast. Tools like WebAIM's Contrast Checker can be used to verify compliance. Avoid pairing #0227B2 with other dark colors or colors with similar luminance, as this can make text difficult to read for users with visual impairments. Consider providing alternative color schemes or themes to cater to users with different visual preferences and needs, including those with color blindness.

Shades

Digital Color Formats

RGB
2 39 178
RGB2 39 178
Red
Green
Blue
HSL
227.39 97.78% 35.29%
227.3997.7835.29HSL
Hue
Saturation
Lightness
HWB
227.39 0.78% 30.2%
227.390.7830.2HWB
Hue
Whiteness
Blackness
hex#0227B2
rgb2 39 178
hsl227.39 97.78% 35.29%
cmyk98.88% 78.09% 0% 30.2%
hwb227.39 0.78% 30.2%
xyz8.79 4.68 42.56
CMYK
98.88% 78.09% 0% 30.2%
98.8878.09030.2CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.79 4.68 42.56
8.794.6842.56XYZ
X
Y
Z

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