International Klein Blue

#0028A3

About International Klein Blue

International Klein Blue, represented by the hexadecimal color code #0028A3, is a deep and intense shade of blue. It is named after the French artist Yves Klein, who registered the color as a trademark in 1957. Klein sought to create a blue that conveyed the purest expression of blue, representing the boundless and immaterial. The color is achieved by suspending ultramarine pigment in a synthetic resin, which retains the pigment's intensity and brilliance. International Klein Blue is known for its striking visual impact and has been used in a variety of artistic and commercial applications. It represents creativity, and freedom. It is essential to be mindful of its luminance when incorporating this color into designs to ensure optimal readability and user experience.

The hex color #0028A3, also known as International Klein Blue, presents some accessibility challenges. Its dark hue results in a low luminance value, meaning it requires careful consideration when used as a foreground color. According to WCAG guidelines, sufficient contrast between foreground and background colors is crucial for readability, especially for users with visual impairments. A contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. When using #0028A3 for text or interactive elements, ensure a light background color is chosen to meet these contrast requirements. White (#FFFFFF) or very light shades of gray or yellow can provide adequate contrast. Avoid pairing it with other dark colors, as this will likely result in insufficient contrast and make content difficult to read. Additionally, provide alternative visual cues, such as underlines or icons, for links to ensure they are easily identifiable, even for users who may have difficulty distinguishing color.

Shades

Digital Color Formats

RGB
0 40 163
RGB0 40 163
Red
Green
Blue
HSL
225.28deg 100% 31.96%
225.2810031.96HSL
Hue
Saturation
Lightness
HWB
225.28deg 0% 36.08%
225.28036.08HWB
Hue
Whiteness
Blackness
hex#0028A3
rgb0 40 163
hsl225.28deg 100% 31.96%
cmyk100% 75.46% 0% 36.08%
hwb225.28deg 0% 36.08%
xyz-d650.07 0.04 0.35
oklch0.3626 0.198 263.68
oklab0.3626 -0.02 -0.2
CMYK
100% 75.46% 0% 36.08%
10075.46036.08CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.04 0.35
0.070.040.35XYZ
X
Y
Z
OKLCH
0.3626 0.198 263.68
0.36260.198263.68LCH
Lightness
Chroma
Hue
OKLAB
0.3626 -0.02 -0.2
0.3626-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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