CSS Color Formats: HEX, RGB, HSL, and Named Colors Compared
A complete guide to CSS color formats. Compare HEX, RGB, RGBA, HSL, HSLA, and named colors with examples and when to use each.
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Tags: css, color, developer-tools
CSS Color Formats: Keywords, HEX, RGB, HSL, and oklch CSS has accumulated color format support over 30 years of web development, and the modern spec offers more expressive and perceptually accurate color options than ever before. Knowing which format to use — and when — helps you write clearer, more maintainable stylesheets. The Complete List of CSS Color Formats Named Keywords CSS defines 140+ named colors, inherited from the X11 color names used in early Unix systems: Keywords are readable and great for prototyping, but production code typically uses HEX or custom properties for precision and consistency. HEX The most common format in web CSS: HEX is compact, widely understood, and the default output of most design tools. RGB and RGBA The modern space syntax unifies and — the…
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