International Klein Blue

#0425B0

About International Klein Blue

International Klein Blue, represented by the hexadecimal color code #0425B0, is a deep, vivid shade of blue known for its intense and captivating presence. This particular blue was developed by the French artist Yves Klein in collaboration with a Parisian paint supplier. Klein sought to create a blue that captured the essence of the sky and the sea, aiming for a color that felt almost otherworldly and infinite. The color is achieved through a specific mixture, involving a synthetic ultramarine pigment and a special resin binder that maintains the color's brilliance. It became the artist's signature, used extensively in his monochrome paintings and sculptures, symbolizing his exploration of the infinite and the immaterial. Today, International Klein Blue remains a significant color in art, design, and fashion, revered for its unique depth and emotional impact.

The hex color #0425B0, also known as International Klein Blue, presents significant accessibility challenges, especially in web design. Its dark hue results in very low contrast against standard light backgrounds like white (#FFFFFF). This low contrast makes text and other visual elements difficult to read, particularly for users with visual impairments, color blindness, or those simply viewing the content on low-quality screens. To ensure accessibility, it is crucial to pair #0425B0 with very light colors, ideally white or a very pale yellow, for text and interactive elements. Tools like contrast checkers can help determine if the color combination meets WCAG (Web Content Accessibility Guidelines) standards, aiming for a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text. Also, avoid using this color as the sole indicator for important information, such as links or error messages, as colorblind users may miss it entirely. Providing redundant cues, like underlines or icons, can improve accessibility.

Shades

Digital Color Formats

RGB
4 37 176
RGB4 37 176
Red
Green
Blue
HSL
228.49 95.56% 35.29%
228.4995.5635.29HSL
Hue
Saturation
Lightness
HWB
228.49 1.57% 30.98%
228.491.5730.98HWB
Hue
Whiteness
Blackness
hex#0425B0
rgb4 37 176
hsl228.49 95.56% 35.29%
cmyk97.73% 78.98% 0% 30.98%
hwb228.49 1.57% 30.98%
xyz8.55 4.48 41.49
CMYK
97.73% 78.98% 0% 30.98%
97.7378.98030.98CMYK
Cyan
Magenta
Yellow
Key
XYZ
8.55 4.48 41.49
8.554.4841.49XYZ
X
Y
Z

Alternative colors

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