International Klein Blue

#0539AE

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. This specific shade of blue was synthetically created and trademarked by Klein as a crucial part of his artistic vision. Characterized by its rich, intense, and matte appearance, IKB possesses a unique ability to evoke feelings of depth and boundlessness. The mesmerizing effect of the color stems from its capacity to absorb light, creating a visually captivating experience. This color is more than just a pigment; it represents the essence of Klein's artistic exploration and his vision for transcending the limitations of traditional art forms.

The color #0539AE, also known as International Klein Blue, presents some accessibility challenges, particularly in text applications. Due to its dark hue, it requires careful consideration of color contrast to ensure readability for users, especially those with visual impairments. According to WCAG guidelines, sufficient contrast between text and background colors is crucial. For normal text (size 14 points), a contrast ratio of at least 4.5:1 is recommended, while for large text (size 18 points or larger), a ratio of 3:1 is required. When using #0539AE as a background or text color, lighter color values such as white, yellow or light gray should be chosen for the text or background respectively to meet these contrast ratios. Also, avoid using it for crucial interactive elements without proper contrast due to the risk of impairing usability.

Shades

Digital Color Formats

RGB
5 57 174
RGB5 57 174
Red
Green
Blue
HSL
221.54deg 94.41% 35.1%
221.5494.4135.1HSL
Hue
Saturation
Lightness
HWB
221.54deg 1.96% 31.76%
221.541.9631.76HWB
Hue
Whiteness
Blackness
hex#0539AE
rgb5 57 174
hsl221.54deg 94.41% 35.1%
cmyk97.13% 67.24% 0% 31.76%
hwb221.54deg 1.96% 31.76%
xyz-d650.09 0.06 0.41
oklch0.4045 0.1922 262.97
oklab0.4045 -0.02 -0.19
CMYK
97.13% 67.24% 0% 31.76%
97.1367.24031.76CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.09 0.06 0.41
0.090.060.41XYZ
X
Y
Z
OKLCH
0.4045 0.1922 262.97
0.40450.1922262.97LCH
Lightness
Chroma
Hue
OKLAB
0.4045 -0.02 -0.19
0.4045-0.02-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons