International Klein Blue

#0124C9

About International Klein Blue

The hexadecimal color code #0124c9 represents a specific shade of blue in the RGB (Red, Green, Blue) color model. It is often referred to as International Klein Blue (IKB). In this model, the color is created by combining very little red (01), a moderate amount of green (24), and a significant amount of blue (c9). Hexadecimal color codes are commonly used in web design and other digital applications to precisely define colors. IKB is particularly known for its intense and captivating quality, often associated with art and design. The color was made famous by the French artist Yves Klein, who registered it as a trademark. He sought to capture the purest expression of blue, believing it to convey a sense of boundlessness and spirituality.

The hex color #0124c9, a vibrant and deep blue, presents several accessibility considerations for web developers. Primarily, its low luminance value requires careful selection of foreground text colors to ensure sufficient contrast. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Therefore, using white or very light shades of yellow or green as foreground colors against #0124c9 would be advisable. Additionally, developers should avoid using this color for elements that convey critical information solely through color, as users with color vision deficiencies may not be able to distinguish them. Providing redundant cues such as text labels or icons is crucial for inclusive design. Furthermore, consider offering alternative color schemes that provide higher contrast options, empowering users to customize their viewing experience based on their individual needs and preferences.

Shades

Digital Color Formats

RGB
1 36 201
RGB1 36 201
Red
Green
Blue
HSL
229.5deg 99.01% 39.61%
229.599.0139.61HSL
Hue
Saturation
Lightness
HWB
229.5deg 0.39% 21.18%
229.50.3921.18HWB
Hue
Whiteness
Blackness
hex#0124C9
rgb1 36 201
hsl229.5deg 99.01% 39.61%
cmyk99.5% 82.09% 0% 21.18%
hwb229.5deg 0.39% 21.18%
xyz-d650.11 0.05 0.56
oklch0.4032 0.2447 264.27
oklab0.4032 -0.02 -0.24
CMYK
99.5% 82.09% 0% 21.18%
99.582.09021.18CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.11 0.05 0.56
0.110.050.56XYZ
X
Y
Z
OKLCH
0.4032 0.2447 264.27
0.40320.2447264.27LCH
Lightness
Chroma
Hue
OKLAB
0.4032 -0.02 -0.24
0.4032-0.02-0.24LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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