International Klein Blue

#011BB3

General Information about #011BB3

The hex color #011BB3, also known as International Klein Blue (though not precisely), is a deep, intense shade of blue. In the RGB color model, it is composed of 0.4% red, 10.6% green, and 70.2% blue. This color is characterized by its high saturation and relatively low brightness, giving it a strong and attention-grabbing presence. Colors like #011BB3 are often associated with feelings of trust, stability, and intelligence, making it a popular choice for branding and visual communication where these qualities are desired. However, its low luminance makes it difficult to read when used as text against a white background, requiring careful consideration of contrast ratios for accessibility. It is commonly used to convey modernity, innovation, and a sense of authority.

The hex color #011BB3, a deep and vibrant blue reminiscent of International Klein Blue, presents significant accessibility challenges. Its low luminance value means it requires careful consideration when used for text or interactive elements. To ensure readability, it's crucial to pair it with very light colors, such as white or pale yellow, providing a sufficient contrast ratio as defined by WCAG guidelines. A contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. Avoid using #011BB3 for small text or intricate graphics against dark backgrounds, as this can cause eye strain and make content illegible for users with visual impairments. Providing alternative color schemes or a high-contrast mode can greatly improve the accessibility of content using this bold color.

Shades

Digital Color Formats

RGB
1 27 179
RGB1 27 179
Red
Green
Blue
HSL
231.24 98.89% 35.29%
231.2498.8935.29HSL
Hue
Saturation
Lightness
HWB
231.24 0.39% 29.8%
231.240.3929.8HWB
Hue
Whiteness
Blackness
hex#011BB3
rgb1 27 179
hsl231.24 98.89% 35.29%
cmyk99.44% 84.92% 0% 29.8%
hwb231.24 0.39% 29.8%
xyz8.54 4.04 42.98
CMYK
99.44% 84.92% 0% 29.8%
99.4484.92029.8CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.54 4.04 42.98
8.544.0442.98XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

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