International Klein Blue
About International Klein Blue
International Klein Blue, often abbreviated as IKB, is a deep blue hue renowned for its intensity and impact. French artist Yves Klein developed the color in collaboration with a Parisian paint supplier in 1960. He aimed to create a blue that captured the essence of the sky and the sea, a color that evoked a sense of limitlessness and spiritual depth. Klein patented IKB to preserve its unique quality, and it quickly became associated with his monochromatic paintings and sculptures. The color's vibrancy stems from its high concentration of ultramarine pigment, which creates a strong visual presence. The colour has a spectral wave length of approximately 474nm.
International Klein Blue, with its deep and captivating hue, presents some accessibility considerations for web developers. Its relatively low lightness value means that sufficient contrast is essential when pairing it with text or other user interface elements. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. White text on an International Klein Blue background generally meets these requirements, offering good readability. However, caution is advised when using smaller or thinner fonts, as the contrast may become insufficient for users with visual impairments. Testing with accessibility tools and considering user feedback is crucial to ensure optimal legibility and a positive user experience. To improve accessibility one can add a light color as a background. Also one has to consider the color blindness of users.
Shades
Digital Color Formats
Alternative colors
Applications
Call-to-Action Buttons
International Klein Blue is a striking color choice for call-to-action buttons, instantly drawing the user's attention. Its vibrancy communicates energy and encourages interaction. In website design, consider using it strategically against a neutral background to maximize its impact. When applying it to fashion, the International Klein Blue colour offers a wide variety of use cases, as the deep colour can be combined with several lighter or darker nuances. The color can also be used for furniture.
Section Headings
As a background color for headings or section titles, International Klein Blue adds a touch of sophistication and elegance. Its depth creates a sense of importance and visually separates content. It can also be used in application design to add depth and texture to the graphical user interface. The International Klein Blue could also be used for clothing, in particular for jeans or shirts.
Accent Color
Used sparingly as an accent color, International Klein Blue can highlight key elements and create visual interest. Its boldness adds a touch of personality and prevents the design from feeling monotonous. Consider using it for icons, borders, or subtle details to add a pop of color and draw the eye. It could also be used for marketing or advertising. It can be used for interior applications as well.