International Klein Blue

#0018B4

About International Klein Blue

The hex color #0018b4, also known as International Klein Blue (IKB), is a deep and intense shade of blue. Developed by the French artist Yves Klein in collaboration with a Parisian paint dealer, IKB was specifically created to maintain its color intensity when suspended in a binder. It's known for its ultramarine hue and matte finish, which makes it look even more saturated. IKB is deeply associated with Yves Klein's art, most notably his monochrome paintings. This color is not just a pigment; it's a statement, an emotion, and a cornerstone of modern art history. Its intense saturation lends a feeling of depth and evokes feelings of transcendence and spirituality. The color has been trademarked by the Klein family.

The hex color #0018b4, a deep and saturated blue, presents some accessibility challenges, particularly regarding contrast. When used as a background color, it requires very light text (white or near-white) to ensure sufficient contrast for readability, meeting WCAG (Web Content Accessibility Guidelines) standards. A contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. When used for interactive elements like buttons or links, care should be taken to provide clear visual cues beyond color alone, such as underlines or icons, to assist users with color vision deficiencies. Also, avoid pairing this color with other dark colors, as it can reduce readability. Using color contrast analysis tools can help to ensure adequate contrast for all users. Ensure that text alternatives are provided for any non-text content.

Shades

Digital Color Formats

RGB
0 24 180
RGB0 24 180
Red
Green
Blue
HSL
232 100% 35.29%
23210035.29HSL
Hue
Saturation
Lightness
HWB
232 0% 29.41%
232029.41HWB
Hue
Whiteness
Blackness
hex#0018B4
rgb0 24 180
hsl232 100% 35.29%
cmyk100% 86.67% 0% 29.41%
hwb232 0% 29.41%
xyz8.56 3.95 43.49
CMYK
100% 86.67% 0% 29.41%
10086.67029.41CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.56 3.95 43.49
8.563.9543.49XYZ
X
Y
Z

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