International Klein Blue

#0B30A8

About International Klein Blue

International Klein Blue (IKB), with the hexadecimal color code #0B30A8, is a deep blue hue first mixed by the French artist Yves Klein. Klein registered this color as a trademark in 1957. It's renowned for its intense saturation, achieved by suspending pure color pigment in a synthetic resin, maintaining the pigment's original qualities. IKB evokes feelings of depth, transcendence, and the infinite, mirroring Klein's artistic vision. The color lies within the blue-violet spectrum and is considered a tertiary color. Its unique composition distinguishes it from standard blues, making it a recognizable and iconic shade in the art world. It is used in modern designs across many platforms.

International Klein Blue (#0B30A8) presents a moderate challenge for accessibility. Its dark hue results in high contrast against white text, which is generally acceptable. However, when paired with darker shades, readability can suffer significantly. For optimal accessibility, it's recommended to use a light background or text color. Ensure a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text (14pt bold or 18pt regular) to meet WCAG AA standards. Tools like contrast checkers can help verify compliance. When using this color for interactive elements such as buttons or links, providing sufficient visual cues beyond color alone is crucial for users with color vision deficiencies. Also, consider the context in which the color is used to ensure maximum usability for all users.

Shades

Digital Color Formats

RGB
11 48 168
RGB11 48 168
Red
Green
Blue
HSL
225.86deg 87.71% 35.1%
225.8687.7135.1HSL
Hue
Saturation
Lightness
HWB
225.86deg 4.31% 34.12%
225.864.3134.12HWB
Hue
Whiteness
Blackness
hex#0B30A8
rgb11 48 168
hsl225.86deg 87.71% 35.1%
cmyk93.45% 71.43% 0% 34.12%
hwb225.86deg 4.31% 34.12%
xyz-d650.08 0.05 0.38
oklch0.3834 0.194 264.53
oklab0.3834 -0.02 -0.19
CMYK
93.45% 71.43% 0% 34.12%
93.4571.43034.12CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.05 0.38
0.080.050.38XYZ
X
Y
Z
OKLCH
0.3834 0.194 264.53
0.38340.194264.53LCH
Lightness
Chroma
Hue
OKLAB
0.3834 -0.02 -0.19
0.3834-0.02-0.19LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons