International Klein Blue

#0519AE

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 to maintain its unique hue, specifically for his use in his art. IKB's visual impact comes from its intense saturation, achieved by suspending pure color pigment in a clear synthetic resin. The vividness of the color is due to the lack of reflective qualities of the resin, enabling the pigment to retain its original intensity. Chemically, it's a matte ultramarine made with a synthetic resin binder. This creates a color that is both visually arresting and unique due to its specific mixture and proprietary nature, making it a celebrated shade within the art world and beyond. The hex code for International Klein Blue is #0519AE.

International Klein Blue (#0519AE) presents significant accessibility challenges, particularly concerning color contrast. Its deep, saturated hue results in low contrast when paired with lighter colors, making text or interface elements difficult to read for individuals with visual impairments. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. When using #0519AE as a background, it is crucial to use very light foreground colors such as white or very pale yellows to ensure sufficient contrast. Tools like contrast checkers can help verify compliance. Additionally, relying solely on color to convey information is discouraged; providing alternative cues like text labels or icons is essential to ensure inclusivity for all users, including those with color vision deficiencies. Thoughtful consideration of these aspects is vital for creating accessible and user-friendly designs.

Shades

Digital Color Formats

RGB
5 25 174
RGB5 25 174
Red
Green
Blue
HSL
232.9 94.41% 35.1%
232.994.4135.1HSL
Hue
Saturation
Lightness
HWB
232.9 1.96% 31.76%
232.91.9631.76HWB
Hue
Whiteness
Blackness
hex#0519AE
rgb5 25 174
hsl232.9 94.41% 35.1%
cmyk97.13% 85.63% 0% 31.76%
hwb232.9 1.96% 31.76%
xyz8.05 3.78 40.35
CMYK
97.13% 85.63% 0% 31.76%
97.1385.63031.76CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.05 3.78 40.35
8.053.7840.35XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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