International Klein Blue

#0611AE

About International Klein Blue

International Klein Blue, often referred to as IKB, is a deep blue hue first mixed by the French artist Yves Klein. This specific shade was synthetically made and trademarked by Klein as a central part of his artistic exploration. He sought to capture the purest expression of blue, believing it to be the color that best conveyed the immateriality and boundlessness he wished to express in his art. The color is achieved through a unique combination of ultramarine pigment and a synthetic resin binder, which maintains the pigment's intensity and brilliance. IKB is renowned for its ability to evoke feelings of depth, tranquility, and the infinite, making it more than just a color but a symbol of artistic and philosophical ideals.

The hex color #0611ae, also known as International Klein Blue, presents significant accessibility challenges, particularly for users with visual impairments. Its extremely dark value results in very low contrast against lighter backgrounds, making text and other visual elements difficult to discern. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for standard text and 3:1 for large text. This color is highly unlikely to meet these contrast requirements when paired with common background colors like white or light gray. Therefore, using #0611ae for text or important interface elements should be avoided unless paired with very light colors to achieve the required contrast ratio. To enhance accessibility, consider using lighter shades or tints of blue or employing techniques like color overlays or text shadows to improve legibility. Always test color combinations with accessibility evaluation tools to ensure compliance with accessibility standards and provide an inclusive user experience.

Shades

Digital Color Formats

RGB
6 17 174
RGB6 17 174
Red
Green
Blue
HSL
236.07 93.33% 35.29%
236.0793.3335.29HSL
Hue
Saturation
Lightness
HWB
236.07 2.35% 31.76%
236.072.3531.76HWB
Hue
Whiteness
Blackness
hex#0611AE
rgb6 17 174
hsl236.07 93.33% 35.29%
cmyk96.55% 90.23% 0% 31.76%
hwb236.07 2.35% 31.76%
xyz7.92 3.5 40.3
CMYK
96.55% 90.23% 0% 31.76%
96.5590.23031.76CMYK
Cyan
Magenta
Yellow
Key
XYZ
7.92 3.5 40.3
7.923.540.3XYZ
X
Y
Z

Alternative colors

Applications

Complementary color

Buttons

HexColo.rs © 2025