Extract CSS Variables from Any Website (2026 Guide)

CSS variables (Custom Properties) have revolutionized how we write styling on the web. They are the backbone of modern theming, dark mode toggles, and responsive design systems.

If you want to understand how a top-tier website is styled, extracting its CSS variables is the holy grail. It reveals the exact colour palettes, spacing scales, and typography hierarchies the developers established.

Here is the definitive guide to finding, extracting, and utilizing CSS variables from any live website in 2026.

Why CSS Variables Are So Valuable

In the old days of CSS, if a brand colour was #FF5500, that hex code was hardcoded hundreds of times across the stylesheet.

Today, it looks like this:

:root {
    --brand-primary: #FF5500;
    --brand-hover: #CC4400;
    --space-4: 16px;
    --shadow-soft: 0 4px 20px rgba(0,0,0,0.05);
}

.button {
    background: var(--brand-primary);
    padding: var(--space-4);
    box-shadow: var(--shadow-soft);
}