International Klein Blue

#042AB4

General Information about International Klein Blue

International Klein Blue, represented by the hex code #042AB4, is a deep and intense shade of blue that evokes feelings of creativity, sophistication, and depth. It is named after the French artist Yves Klein, who popularized the color by using it extensively in his artworks. This specific hue is created by suspending pure color pigment in a synthetic resin, maintaining its vibrancy. In the RGB color model, #042AB4 consists of 1.6% red, 16.5% green, and 70.6% blue. Its high blue component gives it a calming yet powerful presence. The color is frequently used in art, design, and branding to convey innovation and imagination. Because of its unique visual impact, it is often associated with modern and futuristic aesthetics.

The hex color #042AB4, also known as International Klein Blue, presents accessibility challenges due to its low luminance. When used as a foreground color, it requires careful consideration of the background color 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. Pairing #042AB4 with a light color such as #FFFFFF (white) or #F0F0F0 (light gray) improves readability. Avoid using it with darker colors, as the resulting contrast will be insufficient. Using a color contrast checker tool is advisable to verify compliance with accessibility standards. Furthermore, consider providing alternative visual cues, such as text labels or icons, to enhance usability for all users.

Shades

Digital Color Formats

RGB
4 42 180
RGB4 42 180
Red
Green
Blue
HSL
227.05deg 95.65% 36.08%
227.0595.6536.08HSL
Hue
Saturation
Lightness
HWB
227.05deg 1.57% 29.41%
227.051.5729.41HWB
Hue
Whiteness
Blackness
hex#042AB4
rgb4 42 180
hsl227.05deg 95.65% 36.08%
cmyk97.78% 76.67% 0% 29.41%
hwb227.05deg 1.57% 29.41%
xyz-d650.09 0.05 0.44
oklch0.3862 0.2156 264.31
oklab0.3862 -0.02 -0.21
CMYK
97.78% 76.67% 0% 29.41%
97.7876.67029.41CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.44
0.090.050.44XYZ
X
Y
Z
OKLCH
0.3862 0.2156 264.31
0.38620.2156264.31LCH
Lightness
Chroma
Hue
OKLAB
0.3862 -0.02 -0.21
0.3862-0.02-0.21LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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