International Klein Blue

#0015B3

General Information about International Klein Blue

International Klein Blue, represented by the hexadecimal color code #0015b3, is a deep and captivating shade of blue known for its intensity and unique matte finish. This color was specifically developed by the French artist Yves Klein in collaboration with a Parisian chemical company to achieve the most vivid expression of blue possible. Klein believed that this particular shade of blue captured the essence of the cosmos and the immaterial. The color has since become iconic in the art world and is now used in various design fields. Its unique qualities stem from the specific pigment used, which allows for a high degree of saturation and luminance, resulting in a visually striking and emotionally resonant hue.

The hex color #0015b3, also known as International Klein Blue, presents several accessibility considerations for web developers. Due to its dark hue, sufficient contrast is crucial when pairing it with text or other visual elements. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Therefore, using light colors like white or pale yellow for text on a #0015b3 background is advisable to ensure readability for users with visual impairments. It's essential to avoid using this color for critical interactive elements without proper contrast, as it can render them inaccessible to a significant portion of the audience. Consider using a contrast checker tool to verify the compliance of color combinations.

Shades

Digital Color Formats

RGB
0 21 179
RGB0 21 179
Red
Green
Blue
HSL
232.96deg 100% 35.1%
232.9610035.1HSL
Hue
Saturation
Lightness
HWB
232.96deg 0% 29.8%
232.96029.8HWB
Hue
Whiteness
Blackness
hex#0015B3
rgb0 21 179
hsl232.96deg 100% 35.1%
cmyk100% 88.27% 0% 29.8%
hwb232.96deg 0% 29.8%
xyz-d650.08 0.04 0.43
oklch0.3597 0.2313 264.23
oklab0.3597 -0.02 -0.23
CMYK
100% 88.27% 0% 29.8%
10088.27029.8CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.04 0.43
0.080.040.43XYZ
X
Y
Z
OKLCH
0.3597 0.2313 264.23
0.35970.2313264.23LCH
Lightness
Chroma
Hue
OKLAB
0.3597 -0.02 -0.23
0.3597-0.02-0.23LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons