International Klein Blue

#0126C5

About International Klein Blue

International Klein Blue, often referred to as IKB, is a deep blue hue first mixed by the French artist Yves Klein. It's renowned for its intense saturation and unique matte finish, achieved by suspending pure ultramarine pigment in a synthetic resin. Klein registered this color as a trademark, solidifying its place in art history. Chemically, it is based on synthetic ultramarine, a pigment derived from sodium aluminosilicate with sulfide. The color evokes feelings of depth, infinity, and the sublime, reflecting Klein's artistic vision. IKB has been widely used in art, fashion, and design, becoming a symbol of modernity and innovation. It is also worth noting that other shades of blue can also be associated to similar themes or emotions.

The hex color #0126c5, also known as International Klein Blue, presents significant accessibility challenges. Its very low luminance of approximately 1% makes it unsuitable as a text color on a white background. The contrast ratio is far below the WCAG guidelines for both normal and large text, meaning users with visual impairments, including those with low vision or color blindness, will struggle to read it. To improve accessibility, consider using a much lighter color for text when using International Klein Blue as a background. White text, for example, could provide sufficient contrast. However, it's best to perform accessibility testing with tools like contrast checkers to ensure compliance with WCAG standards and to accommodate a wider range of user needs. Avoid using this color for critical interface elements like buttons or links without careful consideration of contrast and alternative visual cues.

Shades

Digital Color Formats

RGB
1 38 197
RGB1 38 197
Red
Green
Blue
HSL
228.67deg 98.99% 38.82%
228.6798.9938.82HSL
Hue
Saturation
Lightness
HWB
228.67deg 0.39% 22.75%
228.670.3922.75HWB
Hue
Whiteness
Blackness
hex#0126C5
rgb1 38 197
hsl228.67deg 98.99% 38.82%
cmyk99.49% 80.71% 0% 22.75%
hwb228.67deg 0.39% 22.75%
xyz-d650.11 0.05 0.53
oklch0.4007 0.2388 264.22
oklab0.4007 -0.02 -0.24
CMYK
99.49% 80.71% 0% 22.75%
99.4980.71022.75CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.11 0.05 0.53
0.110.050.53XYZ
X
Y
Z
OKLCH
0.4007 0.2388 264.22
0.40070.2388264.22LCH
Lightness
Chroma
Hue
OKLAB
0.4007 -0.02 -0.24
0.4007-0.02-0.24LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons