International Klein Blue

#0318B0

About International Klein Blue

International Klein Blue (IKB), with the hex code #0318B0, is a deep, vivid shade of blue first synthesized by the French artist Yves Klein. Klein patented this specific hue to establish its unique artistic identity. This color is celebrated for its purity and intensity, often associated with a sense of infinity and the sublime. Chemically, IKB is a matte ultramarine pigment mixed with a synthetic resin binder, which enhances its saturation and vibrancy. This particular shade of blue is not just a color but an art trademark, used primarily in painting, sculpture, and other artistic endeavors. Its unique formulation allows for a consistent and striking visual impact, making it instantly recognizable and highly valued in the art world. Its impact is undeniable and symbolizes depth and boundless creativity.

The hex color #0318B0, also known as International Klein Blue, presents significant accessibility challenges, particularly in web design. Its extremely dark hue results in very low contrast against common background colors like white. This poses readability issues for users with visual impairments, including those with low vision or color blindness. According to WCAG guidelines, sufficient contrast is crucial for text and interactive elements to ensure usability. To meet accessibility standards, web developers employing #0318B0 should pair it with very light colors such as #FFFFFF (white) or #F0F0F0 (light gray) for text or user interface elements. It is important to rigorously test color combinations using accessibility checkers to guarantee compliance with WCAG AA or AAA standards, ensuring the content is perceivable and usable by all users, regardless of their visual abilities. Consider alternative, lighter shades of blue if contrast requirements cannot be met effectively.

Shades

Digital Color Formats

RGB
3 24 176
RGB3 24 176
Red
Green
Blue
HSL
232.72 96.65% 35.1%
232.7296.6535.1HSL
Hue
Saturation
Lightness
HWB
232.72 1.18% 30.98%
232.721.1830.98HWB
Hue
Whiteness
Blackness
hex#0318B0
rgb3 24 176
hsl232.72 96.65% 35.1%
cmyk98.3% 86.36% 0% 30.98%
hwb232.72 1.18% 30.98%
xyz8.2 3.81 41.38
CMYK
98.3% 86.36% 0% 30.98%
98.386.36030.98CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.2 3.81 41.38
8.23.8141.38XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

HexColo.rs © 2025