International Klein Blue

#0315A6

About International Klein Blue

International Klein Blue (IKB), represented by the hexadecimal color code #0315A6, is a deep blue hue renowned for its intensity and purity. It was developed by the French artist Yves Klein in collaboration with a Parisian paint supplier, E. Adam, in 1960. Klein registered IKB as a trademark to preserve its unique quality and prevent its dilution. The color achieves its remarkable visual impact due to its matte, binder-free synthetic resin finish, which allows the pigment to retain its brilliance. The absence of gloss reflects light differently, enhancing the color's perceived depth. IKB has been extensively used in Klein's monochrome paintings and sculptures, becoming a signature element of his artistic expression. It is viewed not merely as a color but as an embodiment of boundless space and spiritual essence, signifying the artist's pursuit of the infinite.

The color #0315A6, also known as International Klein Blue (IKB), presents significant accessibility challenges due to its deep, saturated hue. When used as a background color, sufficient contrast with text is crucial to ensure readability, particularly for users with visual impairments. According to WCAG guidelines, the contrast ratio between text and background should be at least 4.5:1 for normal text and 3:1 for large text (14pt bold or 18pt regular). IKB's darkness necessitates very light text (e.g., white or a very pale yellow) to meet these standards. Using IKB for interactive elements like buttons or links requires careful consideration. Hover states and focus indicators must be clearly distinguishable to aid users navigating with keyboards or screen readers. Avoid pairing IKB with other dark or similarly saturated colors, as this can create a jarring visual experience and further reduce accessibility. Tools like contrast checkers can assist in verifying compliance with accessibility standards when using this color.

Shades

Digital Color Formats

RGB
3 21 166
RGB3 21 166
Red
Green
Blue
HSL
233.37deg 96.45% 33.14%
233.3796.4533.14HSL
Hue
Saturation
Lightness
HWB
233.37deg 1.18% 34.9%
233.371.1834.9HWB
Hue
Whiteness
Blackness
hex#0315A6
rgb3 21 166
hsl233.37deg 96.45% 33.14%
cmyk98.19% 87.35% 0% 34.9%
hwb233.37deg 1.18% 34.9%
xyz-d650.07 0.03 0.36
oklch0.3431 0.2168 264.69
oklab0.3431 -0.02 -0.22
CMYK
98.19% 87.35% 0% 34.9%
98.1987.35034.9CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.03 0.36
0.070.030.36XYZ
X
Y
Z
OKLCH
0.3431 0.2168 264.69
0.34310.2168264.69LCH
Lightness
Chroma
Hue
OKLAB
0.3431 -0.02 -0.22
0.3431-0.02-0.22LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons