International Klein Blue

#0A2EAA

About International Klein Blue

International Klein Blue, represented by the hexadecimal color code #0A2EAA, is a deep and vibrant shade of blue known for its intense saturation and unique matte appearance. It was developed by the French artist Yves Klein in collaboration with a Parisian paint supplier, and patented in 1957. Klein sought to capture the purest expression of blue, which he considered to be the most perfect color. The color is achieved through a specific formula that combines a synthetic resin binder with pure ultramarine pigment. This combination results in a color that appears to be almost devoid of texture, heightening its visual impact. International Klein Blue has become iconic in the art world and is often associated with themes of spirituality, transcendence, and the infinite.

The hex color #0A2EAA, also known as International Klein Blue, presents some accessibility challenges, especially in web design. Its low luminance value of approximately 6% means it needs careful consideration when used for text or interactive elements. According to WCAG (Web Content Accessibility Guidelines), sufficient contrast between text and background is crucial for readability. To ensure accessibility, it's highly recommended to pair #0A2EAA with very light colors such as white (#FFFFFF) or very light shades of gray. Using online contrast checkers can help verify if the contrast ratio meets the minimum requirements for different WCAG levels (AA or AAA). Avoid using this color for small text or important interactive elements if it's not paired with a high contrast color. Employing techniques like color overlays or text shadows can sometimes improve readability, but it's essential to test these adjustments thoroughly with real users, including those with visual impairments.

Shades

Digital Color Formats

RGB
10 46 170
RGB10 46 170
Red
Green
Blue
HSL
226.5deg 88.89% 35.29%
226.588.8935.29HSL
Hue
Saturation
Lightness
HWB
226.5deg 3.92% 33.33%
226.53.9233.33HWB
Hue
Whiteness
Blackness
hex#0A2EAA
rgb10 46 170
hsl226.5deg 88.89% 35.29%
cmyk94.12% 72.94% 0% 33.33%
hwb226.5deg 3.92% 33.33%
xyz-d650.08 0.05 0.39
oklch0.3821 0.1988 264.63
oklab0.3821 -0.02 -0.2
CMYK
94.12% 72.94% 0% 33.33%
94.1272.94033.33CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.05 0.39
0.080.050.39XYZ
X
Y
Z
OKLCH
0.3821 0.1988 264.63
0.38210.1988264.63LCH
Lightness
Chroma
Hue
OKLAB
0.3821 -0.02 -0.2
0.3821-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons