International Klein Blue

#1020B7

About International Klein Blue

The hex color #1020B7, often referred to as International Klein Blue (IKB), is a deep and intense shade of blue. It's a color that's closely associated with the French artist Yves Klein, who registered it as a trademark in 1957. IKB is characterized by its rich, ultramarine hue and its almost velvety appearance, which is achieved by suspending pure color pigment in a clear synthetic resin. This gives the color an exceptional vibrancy and depth. In the RGB color model, #1020B7 is composed of 6.27% red, 12.55% green, and 71.76% blue. In the CMYK color model, it consists of 91.29% cyan, 82.51% magenta, 0% yellow, and 28.24% black. This color is considered a tertiary color, formed by mixing primary and secondary colors. Its strong presence and unique history make it a popular choice in art, design, and branding.

The hex color #1020B7, a deep, vibrant blue reminiscent of International Klein Blue, presents several accessibility considerations for web developers. Due to its strong hue, it's crucial to ensure sufficient contrast when used as a background or text color. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. When pairing #1020B7 with text, lighter shades of yellow, white, or even a carefully chosen light gray would likely provide adequate contrast. Tools like WebAIM's Contrast Checker can be invaluable in verifying compliance. Avoid using #1020B7 for crucial interactive elements without a clear visual cue, as users with visual impairments may struggle to identify them. Also, be mindful of colorblind users; rely not solely on color to convey information, but also use text labels or icons.

Shades

Digital Color Formats

RGB
16 32 183
RGB16 32 183
Red
Green
Blue
HSL
234.25deg 83.92% 39.02%
234.2583.9239.02HSL
Hue
Saturation
Lightness
HWB
234.25deg 6.27% 28.24%
234.256.2728.24HWB
Hue
Whiteness
Blackness
hex#1020B7
rgb16 32 183
hsl234.25deg 83.92% 39.02%
cmyk91.26% 82.51% 0% 28.24%
hwb234.25deg 6.27% 28.24%
xyz-d650.09 0.05 0.45
oklch0.3794 0.2258 266.16
oklab0.3794 -0.02 -0.23
CMYK
91.26% 82.51% 0% 28.24%
91.2682.51028.24CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.05 0.45
0.090.050.45XYZ
X
Y
Z
OKLCH
0.3794 0.2258 266.16
0.37940.2258266.16LCH
Lightness
Chroma
Hue
OKLAB
0.3794 -0.02 -0.23
0.3794-0.02-0.23LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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