International Klein Blue

#0634AE

About International Klein Blue

International Klein Blue, also known as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein patented this color in 1957. What makes it special is its particularly vivid shade of blue, achieved by suspending pure color pigment in a synthetic resin. This process preserves the pigment's intensity, resulting in a color that appears to radiate from within. The distinctive ultramarine color is often associated with Klein's monochrome paintings and sculptures. IKB aims to evoke a sense of boundlessness and transcendence, reflecting the artist's interest in spirituality and the infinite. Its unique formulation and association with a celebrated artist have cemented its place in art history and popular culture.

The hex color #0634ae, also known as International Klein Blue, presents significant accessibility challenges, particularly for users with visual impairments. Its low luminance value of 5.98 results in a poor contrast ratio against standard white backgrounds. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text to ensure readability. This color fails to meet these criteria, making text difficult to read for many users. To improve accessibility, it is advisable to use this color sparingly, especially for text. Consider pairing it with very light or white text or use it as a background color behind high contrast foreground elements. Ensuring adequate contrast is crucial for users with low vision, color blindness, or those using devices with low-quality screens.

Shades

Digital Color Formats

RGB
6 52 174
RGB6 52 174
Red
Green
Blue
HSL
223.57deg 93.33% 35.29%
223.5793.3335.29HSL
Hue
Saturation
Lightness
HWB
223.57deg 2.35% 31.76%
223.572.3531.76HWB
Hue
Whiteness
Blackness
hex#0634AE
rgb6 52 174
hsl223.57deg 93.33% 35.29%
cmyk96.55% 70.11% 0% 31.76%
hwb223.57deg 2.35% 31.76%
xyz-d650.09 0.06 0.41
oklch0.3957 0.1978 263.67
oklab0.3957 -0.02 -0.2
CMYK
96.55% 70.11% 0% 31.76%
96.5570.11031.76CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.41
0.090.060.41XYZ
X
Y
Z
OKLCH
0.3957 0.1978 263.67
0.39570.1978263.67LCH
Lightness
Chroma
Hue
OKLAB
0.3957 -0.02 -0.2
0.3957-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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