International Klein Blue

#0026A3

About International Klein Blue

International Klein Blue, also known as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein registered this color as a trademark in 1957. The intense saturation of IKB is achieved by suspending ultramarine pigment in a synthetic resin, which retains the pigment's original qualities and brilliance. This specific shade of blue evokes feelings of depth, transcendence, and infinity. Due to its unique visual impact, IKB has found applications across various fields, including art, fashion, and design. It is more than just a color, IKB represents creativity, innovation, and artistic expression.

International Klein Blue (#0026A3) presents specific accessibility challenges due to its deep, saturated hue. When used as a background color, it requires very light text (ideally white or a very pale yellow) to ensure sufficient contrast. According to WCAG guidelines, the contrast ratio between the text and background should be at least 4.5:1 for normal text and 3:1 for large text (14 points bold or 18 points regular). Using a color contrast checker is essential to verify compliance. Avoid pairing this color with dark or similarly saturated colors as it can lead to eye strain and readability issues. Consider adding a subtle background overlay or text shadow to further enhance readability. Also, be mindful of users with visual impairments or color blindness, and ensure the design provides alternative visual cues.

Shades

Digital Color Formats

RGB
0 38 163
RGB0 38 163
Red
Green
Blue
HSL
226.01deg 100% 31.96%
226.0110031.96HSL
Hue
Saturation
Lightness
HWB
226.01deg 0% 36.08%
226.01036.08HWB
Hue
Whiteness
Blackness
hex#0026A3
rgb0 38 163
hsl226.01deg 100% 31.96%
cmyk100% 76.69% 0% 36.08%
hwb226.01deg 0% 36.08%
xyz-d650.07 0.04 0.35
oklch0.3595 0.2 263.8
oklab0.3595 -0.02 -0.2
CMYK
100% 76.69% 0% 36.08%
10076.69036.08CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.07 0.04 0.35
0.070.040.35XYZ
X
Y
Z
OKLCH
0.3595 0.2 263.8
0.35950.2263.8LCH
Lightness
Chroma
Hue
OKLAB
0.3595 -0.02 -0.2
0.3595-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons