Best Colour Palettes for Website Design

Colour is one of the first things visitors register on a website — before they read a headline, before they find the navigation, before they decide whether to scroll. Get it right and the site feels immediately trustworthy and on-brand. Get it wrong and visitors feel something is off without being able to name why.

There's no single "best" palette for every website. But there are principles that make palettes work, and patterns that appear repeatedly in well-designed sites. Here's what to take from them.

How many colours you actually need

Most well-designed websites use three to five colours in their core palette, deployed with clear purpose:

Background colour — usually white, off-white, or very light grey. This is the dominant colour that covers the most visual area. It should be as neutral as possible to let content and UI elements stand out.

Primary brand colour — the main colour for buttons, links, key UI elements, and the logo. This is the colour people associate with your brand.

Secondary brand colour — used for section backgrounds, cards, dividers, and supporting elements. Often a lighter or darker version of the primary, or a complementary colour.

Accent colour — high-contrast, used sparingly for the most important actions: the main call-to-action button, highlighted text, notification badges. Should contrast strongly with everything else.

Text colour — almost always dark grey (#1a1a1a or similar) rather than pure black on white. Pure black on white is slightly too high contrast and fatiguing for long reading sessions.

Palettes that work — and why

White + Navy + Gold. High-trust, professional, timeless. Navy conveys reliability; gold conveys quality without the aggression of yellow. Used by financial services, law firms, and premium e-commerce. Works on both white and dark backgrounds. Easy to maintain accessibility contrast ratios.

White + Teal + Warm Grey. Modern, clean, approachable. Teal sits between blue (trust) and green (growth), making it versatile across industries. Warm grey softens the feel compared to cool grey, reducing the clinical feeling that can come with purely blue-and-white palettes. Common in health, wellness, and SaaS.

Off-white + Deep Green + Cream. Natural, sustainable, premium. Deep green has strong associations with nature and quality — distinctly different from the brighter greens used by discount brands. Cream as the background instead of white adds warmth. Popular in food, cosmetics, and environmental brands.

Dark background + White + Electric accent. Modern, tech-focused, high energy. Dark mode palettes use dark grey (not pure black) as the background, white for primary text, and a vivid accent (electric blue, neon green, hot pink) for interactive elements. Reduces eye strain in low-light environments. Common in developer tools, gaming, and creative platforms.

White + Coral + Light Grey. Warm, friendly, accessible. Coral occupies the same approachable space as orange but with more femininity and less aggression. Light grey as a secondary background adds depth without competing with the coral. Common in lifestyle, food, and consumer brands targeting broader audiences.

The rules that prevent palette mistakes

Check contrast ratios, not just visual appearance. A colour combination that looks fine on your calibrated monitor may fail accessibility contrast requirements. WCAG AA requires a contrast ratio of at least 4.5:1 for normal text on its background. There are free tools that check this — or use a colour palette generator that displays contrast ratios automatically.

Test in greyscale. Convert your palette to greyscale in design software. If text, buttons, and backgrounds all look the same shade of grey, you have a contrast problem that affects both accessibility and users with colour vision deficiency.

Reserve your accent colour for actions. If your accent colour appears on backgrounds, illustrations, and body text as well as buttons, it loses its ability to draw attention. An accent that's everywhere attracts the eye nowhere.

Use tints and shades, not a new colour. When you need a lighter or darker version of a colour — for hover states, disabled elements, card backgrounds — use a tint (white added) or shade (black added) of your existing palette colours. Introducing a new colour to solve a UI problem is how palettes expand uncontrollably to twelve colours that no longer feel coherent.

Starting from a single colour

The most reliable way to build a web colour palette is to start with your primary brand colour and generate the rest systematically. A colour palette generator takes your primary colour and shows you complementary colours (high contrast, good for accents), analogous colours (low contrast, good for secondary elements), and triadic colours (balanced, used when you need more variety).

From those options, pick your secondary and accent. Then add your background (usually close to white) and text colour (usually close to black). You have a five-colour palette that's harmonious by construction, not by luck.

What to avoid

Avoid colours that are trendy right now if you're building for longevity. Colour trends in web design run in two-to-three year cycles. A palette built around the Pantone Colour of the Year will feel dated by the next design refresh.

Avoid saturated colours for large backgrounds. A fully saturated red or blue background behind body text is exhausting to read and signals aggression or alarm rather than information. Reserve high saturation for small elements — buttons, icons, badges.

Avoid pure white (#ffffff) and pure black (#000000) as text-background pairs for long reading content. Slightly off-white and dark grey are easier on the eyes for extended reading.