International Klein Blue
About International Klein Blue
International Klein Blue, also known as #0a33aa, is a deep blue hue first mixed by the French artist Yves Klein. Klein worked with a chemist to develop this unique shade of blue, and he patented it in 1957. The color is renowned for its intense saturation and visual impact, aiming to capture the purest expression of blue. Chemically, it is a matte ultramarine pigment. In the RGB color model, it's composed of 3.92% red, 20% green, and 66.67% blue. Its intensity and depth make it a visually striking color used in art, design, and branding. The color aims to capture the intensity and feeling of the sky and sea.
The hex color #0a33aa, also known as International Klein Blue, presents some accessibility challenges. Its dark hue means it requires careful consideration of contrast ratios, particularly when used for text or interactive elements. According to WCAG guidelines, sufficient contrast between text and background is essential for readability, especially for users with visual impairments. For normal text (14pt / 18px and above), a contrast ratio of at least 4.5:1 is recommended, while for large text (18pt / 24px and above), the ratio should be 3:1. When using #0a33aa as a background color, ensure that any text or interactive elements on top meet these contrast requirements. Lighter text colors like white (#ffffff) or very light shades of gray are often necessary to achieve sufficient contrast. Tools such as contrast checkers can help determine if your color combinations meet accessibility standards. In addition, avoid relying solely on color to convey information, as users with color blindness may not be able to distinguish between certain colors.
Shades
Digital Color Formats
Alternative colors
- #2e5cb8
A slightly lighter shade of blue that still provides a rich color while improving contrast with white text.
- #46699c
A more muted blue that can be easier on the eyes for extended reading.
- #1e4db2
A vibrant but accessible alternative to Klein Blue, offering a balance between visual appeal and readability.
Applications
Website Design
International Klein Blue is excellent for creating a sophisticated and modern aesthetic in website design. It can be used for headings, call-to-action buttons, or as a background accent to draw attention to specific elements. When combined with a clean, minimalist layout, it makes a bold statement. Use it for branding and visual identity in digital products. Be careful to ensure that the other colors used on the site are not clashing with the deep blue. The color is also very well suitable for charts and diagrams to represent data and statistics.
Fashion Design
This color makes a striking statement in fashion design, especially when used as a bold accent color or in statement pieces. Think of it as a bold color choice for dresses, suits, or accessories. It is also suitable to create unique patterns, adding depth to the garment, or as an unexpected touch in shoe design. Complementary colors or neutral palettes can create visual balance.
Interior Design
In interior design, International Klein Blue can be used to create a focal point in a room. Consider painting an accent wall, incorporating it into furniture upholstery, or using it in artwork and decorative accessories. It works particularly well in modern and contemporary spaces, adding a touch of drama and sophistication. Combine it with neutral colors like white, gray, or beige to create a balanced look. It is also suitable for textiles and decorative patterns.