International Klein Blue
General Information about International Klein Blue
International Klein Blue, often referred to as IKB, is a deep shade of blue first mixed by the French artist Yves Klein. The color's visual impact comes from its heavy reliance on ultramarine pigment, as well as Klein's strategy of using a matte, synthetic resin binder that suspends the pigment and allows the color to achieve its maximum luminosity. Klein specified that IKB was best designated as a visual phenomenon. The patent for the color was filed in 1957. Klein’s intention was to register the quality of pure blue. IKB became synonymous with Klein’s work and an integral part of his artistic identity. The color evokes feelings of depth, vastness, and the infinite, making it popular in art and design for its striking visual impact.
The color #002AB4, also known as International Klein Blue, presents significant accessibility challenges, especially for users with visual impairments. Its low luminance value of approximately 4.2 cd/m² falls far short of WCAG guidelines for contrast ratios. When used as a foreground color, it requires a background color with a significantly higher luminance to ensure sufficient contrast. Using pure white (#FFFFFF) as a background provides a contrast ratio of approximately 4.9:1, barely meeting the minimum requirement for normal text (4.5:1) under WCAG 2.1 AA standards, and failing to meet the enhanced AAA standard (7:1). For small text, it's highly recommended to use a lighter shade of blue or a contrasting color such as yellow or white, alongside careful consideration of font size and weight, to improve readability. Avoid pairing it with dark background colors or using it for crucial interface elements without proper contrast adjustments.
Shades
Digital Color Formats
Alternative colors
A lighter shade of blue that offers better readability and accessibility, especially when used for text or interactive elements. It maintains the essence of the original color while ensuring WCAG compliance.
A shade of blue that still provides a vibrant color experience while offering greater readability for larger text and graphical elements.
A shade of blue that works well on darker backgrounds, while still adhering to WCAG compliance.
Applications
Web Design Accent Color
International Klein Blue can be used in website design to draw attention to key elements. Due to its intensity, it works well in limited doses for buttons, highlights, or calls to action. When using it in user interfaces, ensure sufficient contrast with the background to meet accessibility standards. It is not recommended to be used for body text.
Fashion Accent
In fashion, International Klein Blue makes a bold statement. It can be used in single garments or accessories to create a striking and memorable look. Designers might use it to create visual impact in the fashion design, but often in combination with a more neutral color.
Interior Design Accent
International Klein Blue can be used as an accent color in interior design to create a focal point. It can be applied to art pieces, furniture or accent walls to add a vibrant touch to the room. In interior design, it is important to create a feeling. Using #002AB4, it's possible to create a modern touch.