International Klein Blue

#0338B1

About International Klein Blue

International Klein Blue, often referred to as IKB, is a deep blue hue first mixed by the French artist Yves Klein. This color achieves a visual impact beyond many other blue shades because of its purity and intensity. Klein patented this specific shade of blue to preserve its uniqueness for his artistic endeavors. IKB is created using a synthetic ultramarine pigment and a special matte, synthetic resin binder that maintains the color's brilliance. The color is often associated with concepts of infinity, spirituality, and the immaterial. It has been used in various art forms, including painting, sculpture, and fashion, to evoke a sense of depth and emotion.

The hex color #0338B1, also known as International Klein Blue, presents significant accessibility challenges. Its low lightness value results in poor contrast against light backgrounds, making text and interface elements difficult to read for users with visual impairments. According to WCAG guidelines, sufficient contrast is crucial for ensuring content is perceivable. To improve accessibility, it is recommended to use #0338B1 with very light backgrounds or to pair it with lighter, contrasting colors for text and interactive elements. Alternatively, using a darker shade of blue or a completely different color palette altogether can enhance readability and ensure a more inclusive user experience. Thoroughly testing color combinations with accessibility evaluation tools is essential to meet accessibility standards.

Shades

Digital Color Formats

RGB
3 56 177
RGB3 56 177
Red
Green
Blue
HSL
221.72deg 96.67% 35.29%
221.7296.6735.29HSL
Hue
Saturation
Lightness
HWB
221.72deg 1.18% 30.59%
221.721.1830.59HWB
Hue
Whiteness
Blackness
hex#0338B1
rgb3 56 177
hsl221.72deg 96.67% 35.29%
cmyk98.31% 68.36% 0% 30.59%
hwb221.72deg 1.18% 30.59%
xyz-d650.09 0.06 0.42
oklch0.4054 0.1974 263
oklab0.4054 -0.02 -0.2
CMYK
98.31% 68.36% 0% 30.59%
98.3168.36030.59CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.42
0.090.060.42XYZ
X
Y
Z
OKLCH
0.4054 0.1974 263
0.40540.1974263LCH
Lightness
Chroma
Hue
OKLAB
0.4054 -0.02 -0.2
0.4054-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons