International Klein Blue

#0422A6

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 patented this color in 1957. The visual impact of IKB comes from its heavy reliance on ultramarine pigment, as well as Klein's use of a matte, synthetic resin binder, which allows the pigment to maintain its brilliance. IKB is recognized as a notable color in the world of art. This unique color has become synonymous with Klein's artistic explorations of color, space, and perception. The use of this blue is intended to evoke a sense of depth and infinity. It has become a signature aspect of his work and a touchstone in modern art history.

The color #0422A6, or International Klein Blue, presents significant accessibility challenges, especially for users with visual impairments. Its extremely low luminance value of 0.007 results in poor contrast against standard white backgrounds, failing WCAG AA and AAA standards for text and non-text contrast. To ensure inclusivity, it's crucial to avoid using this color for text, essential icons, or interactive elements without implementing compensating measures. These might include pairing it with very light colors such as white or very light grays, or utilizing larger text sizes and bolder font weights to improve readability. Additionally, providing alternative styling options that offer higher contrast is essential for accommodating individual user preferences and needs. Careful consideration of colorblindness is also necessary, as the pure blue hue may be problematic for individuals with tritanopia or tritanomaly.

Shades

Digital Color Formats

RGB
4 34 166
RGB4 34 166
Red
Green
Blue
HSL
228.89deg 95.29% 33.33%
228.8995.2933.33HSL
Hue
Saturation
Lightness
HWB
228.89deg 1.57% 34.9%
228.891.5734.9HWB
Hue
Whiteness
Blackness
hex#0422A6
rgb4 34 166
hsl228.89deg 95.29% 33.33%
cmyk97.59% 79.52% 0% 34.9%
hwb228.89deg 1.57% 34.9%
xyz-d650.08 0.04 0.36
oklch0.3583 0.2066 264.58
oklab0.3583 -0.02 -0.21
CMYK
97.59% 79.52% 0% 34.9%
97.5979.52034.9CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.04 0.36
0.080.040.36XYZ
X
Y
Z
OKLCH
0.3583 0.2066 264.58
0.35830.2066264.58LCH
Lightness
Chroma
Hue
OKLAB
0.3583 -0.02 -0.21
0.3583-0.02-0.21LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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