International Klein Blue

#011CB3

About International Klein Blue

International Klein Blue, represented by the hexadecimal color code #011CB3, is a deep and intense shade of blue known for its unique saturation and visual impact. Developed by the French artist Yves Klein, this color was specifically created to evoke a sense of depth and boundlessness, often associated with the infinite expanse of the sky or the sea. Chemically, it is a matte ultramarine pigment, highly concentrated and unbound by a resin or glue, retaining its intensity. The color has been used extensively in art, design, and fashion, symbolizing creativity, spirituality, and the sublime. Its distinctive appearance makes it easily recognizable and visually stimulating.

The color #011CB3, a deep and vibrant blue, presents some accessibility challenges. Its low luminance value of approximately 3% means that text rendered in this color requires very light foreground text to achieve sufficient contrast, as defined by WCAG guidelines. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. When used for interactive elements like buttons or links, clear visual cues beyond color alone are crucial, such as underlines, borders, or icons. This ensures that users with color vision deficiencies can perceive and understand the interactive elements. Using color contrast checking tools during design and development is essential to ensure compliance with accessibility standards and create an inclusive user experience. Insufficient contrast can cause eye strain and readability issues for many users.

Shades

Digital Color Formats

RGB
1 28 179
RGB1 28 179
Red
Green
Blue
HSL
230.9 98.89% 35.29%
230.998.8935.29HSL
Hue
Saturation
Lightness
HWB
230.9 0.39% 29.8%
230.90.3929.8HWB
Hue
Whiteness
Blackness
hex#011CB3
rgb1 28 179
hsl230.9 98.89% 35.29%
cmyk99.44% 84.36% 0% 29.8%
hwb230.9 0.39% 29.8%
xyz8.56 4.09 42.99
CMYK
99.44% 84.36% 0% 29.8%
99.4484.36029.8CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.56 4.09 42.99
8.564.0942.99XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

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