International Klein Blue

About International Klein Blue

International Klein Blue, also known as IKB, is a deep shade of blue first mixed by the French artist Yves Klein. It is a specific hue of blue tending toward ultramarine, and it was developed by Klein in collaboration with a Parisian paint dealer named Édouard Adam in 1956. Klein registered this paint formula under the name International Klein Blue (IKB) at the French Institut National de la Propriété Industrielle in 1957. IKB’s visual impact comes from its heavy reliance on ultramarine pigment, as well as Klein’s matte, synthetic resin binder, which suspends the pigment and allows the color to achieve its maximum vibrancy. It is often associated with feelings of expansiveness, spirituality, and artistic expression. Klein used it in a variety of artworks, including monochrome paintings, sculptures, and even performance art.

The hex color #011ca9, also known as International Klein Blue, presents significant accessibility challenges. Its extremely low luminance value (very dark blue) results in very poor contrast against typical light backgrounds like white. According to WCAG guidelines, sufficient contrast is essential for readability and usability, especially for users with visual impairments. Text or interactive elements using #011ca9 on a white background would likely fail WCAG AA and AAA standards. To improve accessibility, consider using a much lighter color for text or interactive elements placed on a #011ca9 background, or vice versa. Tools such as contrast checkers can help verify compliance. Also, ensure that any visual information conveyed solely through this color is also available through other means, such as text labels or symbols. Testing with real users, especially those with visual impairments, is crucial to validate the effectiveness of any implemented changes.

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Digital Color Formats

Alternative colors

Applications

• Web Design Accent

  In web design, International Klein Blue (#011ca9) can be used sparingly as an accent color to draw attention to specific elements, such as buttons or links. Due to its high intensity, it's best used against a light or neutral background to ensure readability. It's also suitable for creating a sense of depth or a focal point on a website. Be cautious about using it for large blocks of text or backgrounds, as it may cause eye strain. In branding, #011ca9 can evoke feelings of creativity, confidence, and artistic expression. Consider using it in logos, brand colors, or website elements to convey these qualities.

• Interior Design Accent

  In interior design, International Klein Blue (#011ca9) can be a bold choice for creating a statement wall or adding pops of color through furniture and accessories. It works well in modern and contemporary spaces, adding a touch of sophistication and artistic flair. When using it in a room, balance it with neutral colors like white, gray, or beige to prevent it from overwhelming the space. Consider using it in artwork, textiles, or decorative objects to add visual interest. This shade can also be used for furniture upholstery or as an accent color in cushions and throws.

• Fine Arts applications

  In the realm of fine arts, International Klein Blue (IKB) achieved iconic status through the work of Yves Klein, who registered it as a trademark. Its intense, ultramarine hue was intended to convey a sense of pure, unbounded space. Artists can utilize IKB to evoke strong emotions and capture the essence of spirituality. The hue has been used in minimalistic paintings, sculptures, and installations to create a sense of depth and intrigue. Its remarkable depth can be used to create powerful symbolic artwork.

Complementary color

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