International Klein Blue

#0536AE

About International Klein Blue

International Klein Blue, also known as IKB, is a deep blue hue first mixed by the French artist Yves Klein. It is renowned for its intense color saturation and its distinct matte finish, which is achieved by suspending pure ultramarine pigment in a synthetic resin. Klein registered this color as a trademark in 1957, solidifying its place in art history. The color is intended to evoke a feeling of limitlessness, representing the artist's vision of boundless space and the immateriality of concepts. It is a very pure and intense ultramarine, and is used in many artwork and design projects across the world, and is especially good at creating focus.

The color #0536AE, a deep shade of blue, presents significant accessibility challenges. Its low luminance value of approximately 3% means that it offers very little contrast against white or light backgrounds. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is required for normal text and 3:1 for large text. This color fails to meet these standards when paired with typical light-colored backgrounds, making it difficult for users with visual impairments to read text or distinguish elements. To improve accessibility, consider using this color sparingly or pairing it with much lighter colors that offer sufficient contrast. Alternatively, avoid using it for critical elements like text or interactive components unless a high-contrast background is employed. Using color contrast checking tools can help to ensure compliance with accessibility standards.

Shades

Digital Color Formats

RGB
5 54 174
RGB5 54 174
Red
Green
Blue
HSL
222.6deg 94.41% 35.1%
222.694.4135.1HSL
Hue
Saturation
Lightness
HWB
222.6deg 1.96% 31.76%
222.61.9631.76HWB
Hue
Whiteness
Blackness
hex#0536AE
rgb5 54 174
hsl222.6deg 94.41% 35.1%
cmyk97.13% 68.97% 0% 31.76%
hwb222.6deg 1.96% 31.76%
xyz-d650.09 0.06 0.41
oklch0.3991 0.1957 263.34
oklab0.3991 -0.02 -0.19
CMYK
97.13% 68.97% 0% 31.76%
97.1368.97031.76CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.41
0.090.060.41XYZ
X
Y
Z
OKLCH
0.3991 0.1957 263.34
0.39910.1957263.34LCH
Lightness
Chroma
Hue
OKLAB
0.3991 -0.02 -0.19
0.3991-0.02-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

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