International Klein Blue

#0038A4

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep shade of blue known for its intensity. Developed by the French artist Yves Klein in collaboration with a Parisian paint dealer, the color was specifically formulated to maintain its vibrancy when suspended in a binder medium. Klein registered IKB as a trademark in 1957. This specific hue is achieved through a unique combination of ultramarine pigment with a synthetic resin binder that allows the pigment to retain its original qualities. IKB is not just a color; it's an artistic statement, embodying Klein's exploration of pure color as a means of conveying emotion and transcendence. The color is often associated with a sense of depth, boundlessness, and the infinite, reflecting Klein's artistic vision.

The hex color #0038A4, also known as International Klein Blue (IKB), presents certain accessibility considerations for web development. Its dark hue necessitates careful selection of foreground text colors to ensure sufficient contrast, particularly 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. White text on #0038A4 generally meets this requirement, but it's crucial to verify this using contrast checking tools. When using this color for interactive elements, such as buttons or links, it's important to provide clear visual cues on hover, focus, and active states to aid users navigating with keyboards or assistive technologies. Furthermore, avoid relying solely on color to convey information, as colorblind users may not be able to distinguish it effectively. Consider providing alternative indicators, such as text labels or icons, to ensure inclusivity.

Shades

Digital Color Formats

RGB
0 56 164
RGB0 56 164
Red
Green
Blue
HSL
219.51deg 100% 32.16%
219.5110032.16HSL
Hue
Saturation
Lightness
HWB
219.51deg 0% 35.69%
219.51035.69HWB
Hue
Whiteness
Blackness
hex#0038A4
rgb0 56 164
hsl219.51deg 100% 32.16%
cmyk100% 65.85% 0% 35.69%
hwb219.51deg 0% 35.69%
xyz-d650.08 0.06 0.36
oklch0.3916 0.1814 262.03
oklab0.3916 -0.03 -0.18
CMYK
100% 65.85% 0% 35.69%
10065.85035.69CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.06 0.36
0.080.060.36XYZ
X
Y
Z
OKLCH
0.3916 0.1814 262.03
0.39160.1814262.03LCH
Lightness
Chroma
Hue
OKLAB
0.3916 -0.03 -0.18
0.3916-0.03-0.18LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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