Creating a Color Palette in Web Design: How to Choose Harmonious Colors

Choosing colors in web design is not just an aesthetic preference; it is a critical step that directly impacts user experience (UX), brand perception, and accessibility. A correct color palette increases the time users spend on your site, while poor choices can cause eye strain or make content unreadable.

Here are the fundamental rules for creating harmonious and professional color palettes in modern web design:

1. Apply the 60-30-10 Rule

One of the most popular and effective ways to establish balance in design is the 60-30-10 rule. According to this rule, you should distribute colors in your project in the following proportions:

• 60% Dominant Color: Typically used for backgrounds and large areas. It sets the overall tone of the site. White, cream, light gray, or black/dark gray for dark mode are ideal choices.
• 30% Secondary Color: Used for structural elements such as menus, card backgrounds, text blocks, or buttons. It supports the dominant color and provides contrast.
• 10% Accent Color: Used for call-to-action (CTA) buttons, important links, notifications, and details that need to stand out. It is usually a vibrant and eye-catching color.

2. Leverage Color Theory

To choose harmonious colors, you can use mathematical relationships on the color wheel:

• Monochromatic: Uses different saturation and lightness values of a single color. It offers extremely simple, elegant, and eye-friendly designs.
• Analogous: Colors that sit next to each other on the color wheel (e.g., blue, blue-green, and green). It provides natural harmony and smooth transitions.
• Complementary: Colors directly opposite each other on the color wheel (e.g., orange and blue). Ideal when you want to create high contrast and energy.

3. Pay Attention to Readability and Contrast

Accessibility standards (WCAG) require a certain level of color contrast between text and its background. Especially for small text, the contrast ratio should be at least 4.5:1. Writing dark gray text on a black background or white text on a yellow background ruins readability. You should use contrast checker tools to test whether your design is accessible.

4. Consider the Psychological Effects

Colors trigger different emotions psychologically:

• Blue: Trust, professionalism, and tranquility (commonly preferred in finance and technology sites).
• Green: Nature, health, freshness, and sustainability.
• Red: Excitement, urgency, and energy (highly effective in discounts or e-commerce CTAs).
• Yellow/Orange: Friendly, warm, and creative.

When creating a color palette for your own project, make sure to choose tones that appeal to your target audience while staying true to the rules of color theory.