International Klein Blue

#0121B3

About International Klein Blue

International Klein Blue, represented by the hexadecimal color code #0121B3, is a deep, vivid shade of blue known for its intense saturation. It was created by the French artist Yves Klein in collaboration with a paint supplier to achieve the purest and most impactful expression of blue. This color is often associated with art and sophistication, and is recognized for its ability to evoke feelings of depth and emotion. Its uniqueness stems from its strong chromatic impact. It is rarely found in nature. It's a popular choice among artists, designers, and those seeking a memorable and impactful hue in their creative projects and designs.

The color #0121B3, also known as International Klein Blue, presents significant accessibility challenges due to its low luminance. When used as a foreground color against a white background, it fails WCAG AA and AAA contrast ratio requirements for normal text. To ensure readability, especially for users with visual impairments, it's crucial to pair it with very light colors like white or light yellows. Using it for large text or UI elements can improve accessibility, but thorough testing with accessibility tools is recommended. Avoid using it for small text or interactive elements without sufficient contrast, as this could exclude users. Adding a dark background can also help to make text more readable.

Shades

Digital Color Formats

RGB
1 33 179
RGB1 33 179
Red
Green
Blue
HSL
229.21 98.89% 35.29%
229.2198.8935.29HSL
Hue
Saturation
Lightness
HWB
229.21 0.39% 29.8%
229.210.3929.8HWB
Hue
Whiteness
Blackness
hex#0121B3
rgb1 33 179
hsl229.21 98.89% 35.29%
cmyk99.44% 81.56% 0% 29.8%
hwb229.21 0.39% 29.8%
xyz8.69 4.35 43.03
CMYK
99.44% 81.56% 0% 29.8%
99.4481.56029.8CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.69 4.35 43.03
8.694.3543.03XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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