International Klein Blue

#0432B0

About International Klein Blue

International Klein Blue, often abbreviated as IKB, 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 artistic use of a matte, synthetic resin binder that suspends the color pigment and allows the pigment to retain its original qualities and intensity. The depth of IKB arises from how the eye registers the color. The ultramarine's richness seems to defy conventional color perceptions, evoking a feeling of boundlessness and transcendence, which aligns with Yves Klein's artistic philosophies. The color has found applications in fashion, art, and branding, valued for its unique character.

The hex color #0432B0, a deep shade of blue, presents some accessibility challenges, particularly concerning color contrast. When used as a background color, it necessitates light-colored text to ensure readability. A contrast ratio of at least 4.5:1 is recommended for normal-sized text and 3:1 for larger text to meet WCAG (Web Content Accessibility Guidelines) standards. Using a color contrast checker is crucial to verify compliance. For individuals with visual impairments, relying solely on color to convey information is not advisable; supplementary cues like text labels or icons should be incorporated. When using this color for links, ensure a distinct visual difference from the surrounding text, like an underline or a change in weight, is implemented upon hover or focus to improve accessibility for all users.

Shades

Digital Color Formats

RGB
4 50 176
RGB4 50 176
Red
Green
Blue
HSL
223.95deg 95.56% 35.29%
223.9595.5635.29HSL
Hue
Saturation
Lightness
HWB
223.95deg 1.57% 30.98%
223.951.5730.98HWB
Hue
Whiteness
Blackness
hex#0432B0
rgb4 50 176
hsl223.95deg 95.56% 35.29%
cmyk97.73% 71.59% 0% 30.98%
hwb223.95deg 1.57% 30.98%
xyz-d650.09 0.05 0.42
oklch0.3942 0.2027 263.69
oklab0.3942 -0.02 -0.2
CMYK
97.73% 71.59% 0% 30.98%
97.7371.59030.98CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.42
0.090.050.42XYZ
X
Y
Z
OKLCH
0.3942 0.2027 263.69
0.39420.2027263.69LCH
Lightness
Chroma
Hue
OKLAB
0.3942 -0.02 -0.2
0.3942-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons