International Klein Blue

#001CB0

About International Klein Blue

International Klein Blue (IKB), hex color #001CB0, is a deep blue hue first mixed by the French artist Yves Klein. Klein registered this color as a trademark in 1957. The visual impact of IKB comes from its heavy reliance on ultramarine pigment, as well as Klein's matte, synthetic resin binder which suspends the color pigment and allows the pigment to retain its pure intensity. This ultramarine is a pigment composed primarily of a mineral called lazurite. The unique and vivid shade of blue, often associated with art and creativity, is frequently used to evoke feelings of depth, inspiration, and tranquility. Its distinctive character makes it a popular choice in various design fields.

The hex color #001CB0, a deep shade of blue, presents several accessibility considerations for web developers. When used as a foreground color, it requires a light background to ensure sufficient contrast for readability, especially for users with visual impairments. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Using a color contrast checker is crucial to verify compliance. Avoid pairing this blue with dark or similarly toned colors. Consider providing alternative color schemes that users can switch to if the default combination proves challenging. Also, avoid using color alone to convey important information; supplement color cues with text labels or icons to ensure inclusivity for colorblind users.

Shades

Digital Color Formats

RGB
0 28 176
RGB0 28 176
Red
Green
Blue
HSL
230.45 100% 34.51%
230.4510034.51HSL
Hue
Saturation
Lightness
HWB
230.45 0% 30.98%
230.45030.98HWB
Hue
Whiteness
Blackness
hex#001CB0
rgb0 28 176
hsl230.45 100% 34.51%
cmyk100% 84.09% 0% 30.98%
hwb230.45 0% 30.98%
xyz8.25 3.97 41.4
CMYK
100% 84.09% 0% 30.98%
10084.09030.98CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.25 3.97 41.4
8.253.9741.4XYZ
X
Y
Z

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