International Klein Blue

#0B30A9

About International Klein Blue

International Klein Blue, often referred to as IKB, is a deep shade of blue first mixed by the French artist Yves Klein. Klein patented this color to maintain its unique properties and association with his work. Its intense, saturated hue is achieved by using a specific ultramarine pigment. The color is known for its ability to evoke feelings of depth, infinity, and transcendence. It has become a symbol of modern art and continues to be used in various fields, from fashion to interior design, due to its striking and memorable aesthetic. Its distinct character ensures its presence will be noted.

International Klein Blue (#0B30A9) provides a significant level of contrast against white, making it suitable for text and user interface elements. However, when pairing it with darker shades, it's crucial to ensure sufficient contrast to meet WCAG guidelines. Using online contrast checkers can help determine if the color combination meets the required ratios for different levels of accessibility (AA or AAA). This deep, saturated blue may pose challenges for users with certain visual impairments, so consider providing alternative color schemes or high-contrast modes to enhance usability. The luminance value of #0B30A9 is relatively low, so it's best used for larger text sizes or graphical elements to improve readability and visibility for all users. Proper implementation of ARIA attributes and semantic HTML can further contribute to an inclusive design.

Shades

Digital Color Formats

RGB
11 48 169
RGB11 48 169
Red
Green
Blue
HSL
225.95deg 87.78% 35.29%
225.9587.7835.29HSL
Hue
Saturation
Lightness
HWB
225.95deg 4.31% 33.73%
225.954.3133.73HWB
Hue
Whiteness
Blackness
hex#0B30A9
rgb11 48 169
hsl225.95deg 87.78% 35.29%
cmyk93.49% 71.6% 0% 33.73%
hwb225.95deg 4.31% 33.73%
xyz-d650.08 0.05 0.38
oklch0.3845 0.1953 264.54
oklab0.3845 -0.02 -0.19
CMYK
93.49% 71.6% 0% 33.73%
93.4971.6033.73CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.05 0.38
0.080.050.38XYZ
X
Y
Z
OKLCH
0.3845 0.1953 264.54
0.38450.1953264.54LCH
Lightness
Chroma
Hue
OKLAB
0.3845 -0.02 -0.19
0.3845-0.02-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons