Colors are one of the most powerful, and unfortunately also most underrated, tools in branding and website design. I constantly see sites where colors have been chosen ‘because they are nice’ or ‘because the CEO likes green’.
The truth is that choosing colors is not a matter of taste; it is a strategic decision that affects how customers experience your brand, whether they trust you, and whether they buy. In this article, I go through practical rules and best practices for building a color palette that truly works.
The 60-30-10 rule: Balance with three colors
This is a classic rule borrowed from interior design, and it works excellently on websites and in brand design too. The rule divides colors into three parts:
- 60% primary color: This is the dominant color that defines the overall look. Usually neutral (white, gray, beige) or the brand’s main color. For example background, large areas.
- 30% secondary color: This brings contrast and rhythm. For example heading background color, bars, navigation.
- 10% accent color: This draws attention to critical points. For example buttons (call-to-action), icons, links.
Practical example:
- 60% = White background
- 30% = Dark blue (headings, navigation, footer)
- 10% = Orange (buttons, highlights)
This rule creates visual balance and clarity. Too many colors scatter attention; too few make the page boring.
Common color combinations - What works and when
1. Monochromatic (one color, several shades):
Uses one color in different light and dark tones. For example dark blue, medium blue, light blue.
- Benefits: Calm, consistent, easy to implement.
- Drawbacks: Can be boring without enough contrast.
- When to use: On minimalist, professional websites.
2. Complementary colors (opposite colors):
Uses opposite colors on the color wheel. For example blue + orange, red + green, yellow + violet.
- Benefits: Strong, dynamic, attention-grabbing.
- Drawbacks: Too intense if overused. Can irritate.
- When to use: For call-to-action buttons when you want to attract attention.
3. Analogous (neighboring colors):
Uses neighboring colors on the color wheel. For example blue, blue-green, green.
- Benefits: Harmonious, natural, pleasing to the eye.
- Drawbacks: Can be too similar and lack enough contrast.
- When to use: In backgrounds, gradients, nature-themed designs.
4. Triadic (three evenly spaced colors):
Uses three colors evenly spaced on the color wheel. For example red, yellow, blue.
- Benefits: Versatile, energetic, balanced.
- Drawbacks: Difficult to control; can look messy.
- When to use: When you want a cheerful, dynamic look (for example children’s sites).
Less is more - Do not use too many colors
One of the most common mistakes in color design is using too many colors. ‘We have a great color palette: blue, green, yellow, orange, violet...’ Stop. That is too much.
Golden rule: Use a maximum of 3-4 main colors (including neutrals such as gray and white). If you need more colors, use different shades of the primary colors.
Why less is better:
- Clarity: Fewer colors = easier to understand hierarchy and the most important elements.
- Professionalism: A simple color palette communicates professionalism. A rainbow communicates confusion.
- Recognizability: When you use the same colors consistently, your brand becomes recognizable (for example Coca-Cola’s red, IKEA’s blue and yellow).
- Accessibility: Fewer colors also make the site easier to access for color-blind and visually impaired users.
Contrast is critical - Especially for accessibility
A beautiful color palette is useless if the text cannot be read. Contrast between text and background is vital.
WCAG accessibility requirements:
- AA level (normal text): Contrast ratio at least 4.5:1
- AA level (large text, over 18pt): Contrast ratio at least 3:1
- AAA level (best practice): Contrast ratio at least 7:1
Practical tips for improving contrast:
- Avoid gray text on a white background; it is hard to read (unless the contrast ratio is high enough).
- Do not use colored text on a colored background; for example red text on green is a readability disaster.
- Test contrast with free tools: WebAIM Contrast Checker, Coolors Contrast Checker.
- If you are unsure, use black text on a white background; it always works.
Practical tools for choosing colors
You do not need to be a color expert when you have the right tools. Here are the best free tools:
- Coolors.co: Generates color palettes randomly or lets you create your own. You can lock one color and let the tool suggest others.
- Adobe Color: Creates color palettes with the color wheel according to different rules (complementary, analogous, etc.).
- Paletton: A simple tool for creating monochromatic and harmonious palettes.
- WebAIM Contrast Checker: Tests the contrast ratio between text and background.
Color design is not random or a matter of taste; it is a strategic tool that affects your brand’s success. When you understand the basic rules (60-30-10, color types, contrast) and use the right tools, you can create a color palette that looks good, works in practice, and supports your business.
Color design is an important part of high-quality websites as a whole. Once the colors have been planned, it is worth continuing to logo design to complete your visual identity.
