Persian Blue

General Information about #1B21CB

The hexadecimal color code #1B21CB represents a shade of blue, often referred to as Persian Blue. In the RGB color model, #1B21CB is composed of 10.59% red, 13.92% green, and 79.61% blue. This indicates a strong dominance of blue, resulting in the deep, vibrant hue. In the CMYK color model, which is used for printing, #1B21CB consists of 87% cyan, 83% magenta, 0% yellow, and 20% black. This combination of cyan and magenta in high proportions creates the distinct blue shade. #1B21CB is commonly used in digital design, web development, and graphic design to convey feelings of trust, stability, and authority. It's also associated with intelligence, communication, and loyalty, making it a popular choice for corporate branding and professional contexts.

The hex color #1B21CB, also known as Persian Blue, presents some accessibility challenges, particularly in text-based applications. Due to its relatively low luminance, it lacks sufficient contrast against light backgrounds like white or very pale grays. This can make text difficult to read for users with visual impairments, including those with low vision or color blindness. To ensure accessibility, it is highly recommended to use #1B21CB with a very light color (such as white or #EEE) for the background. According to WCAG guidelines, a contrast ratio of at least 4.5:1 is required for normal text and 3:1 for large text. The contrast ratio between #1B21CB and white is significantly below this threshold, indicating a need for careful consideration of color pairings. When using #1B21CB, prioritize pairing it with lighter colors, providing alternative high-contrast themes, or increasing text size and weight to improve readability.

Shades

Digital Color Formats

Alternative colors

Applications

• Web and UI Design

  In web design, #1B21CB can be used sparingly for accent elements such as buttons, highlights, or decorative borders. However, avoid using it for primary text or essential interactive elements unless paired with a very light background color to ensure sufficient contrast. It's suitable for creating a sophisticated and modern aesthetic, especially when combined with neutral tones. In UI design, this color can add depth and visual interest to interfaces, but its use should be carefully considered to maintain usability. It could be suitable for data visualizations such as charts and graphs, so long as the contrast in the data points is sufficient.

• Fashion Design

  In fashion, Persian Blue #1B21CB is a striking color choice that can add a touch of elegance and sophistication. It can be used for dresses, suits, or accessories to create a bold statement. This color can be paired with neutral colors like gray, black, or white for a classic look, or with complementary colors for a more vibrant and eye-catching ensemble. It's well-suited for evening wear or special occasions, and can also be incorporated into casual outfits for a pop of color.

• Interior Design

  In interior design, #1B21CB can be used as an accent color to add depth and visual interest to a room. It can be used for walls, furniture, or decorative accessories. Because it is a deep color, it works best in naturally well-lit rooms or those with adequate artificial lighting. Consider painting a single accent wall in this color, or using it for throw pillows, curtains, or artwork. This color works well with neutral tones like beige, gray, or white, and can create a calming and sophisticated atmosphere. It will especially work with rooms that have a theme of the sky or the ocean.

Complementary color

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