Color Converter

CSS

Convert colors between HEX, RGB, and HSL formats. Preview colors in real-time.

Why convert between color formats?

Web development uses multiple color notations for different purposes. HEX codes (#9F7AEA) are compact and widely used in design tools like Figma and Sketch. RGB values are needed for programmatic color manipulation in JavaScript and Canvas APIs. HSL (Hue, Saturation, Lightness) is the most intuitive format for creating color palettes because you can adjust brightness or saturation without changing the hue.

When to use each format

Use HEX in CSS when you want short, readable color declarations. Use RGB or RGBA when you need transparency (alpha channel) or are computing colors in JavaScript. Use HSL when building design systems — it makes it easy to generate consistent tints and shades by adjusting the lightness value while keeping hue and saturation constant. Modern CSS supports all three formats natively.

Color in modern CSS

CSS now supports color-mix(), relative color syntax, and the oklch() color space for perceptually uniform colors. Understanding how HEX, RGB, and HSL relate to each other is foundational knowledge for any frontend developer working with design tokens, dark mode themes, or accessible color contrast ratios that meet WCAG 2.1 AA standards.

Frequently Asked Questions

What color formats does this converter support?

This tool converts between HEX (#RRGGBB), RGB (0-255 per channel), and HSL (hue 0-360, saturation and lightness 0-100%). Click any output value to copy it to your clipboard.

Which color format should I use in CSS?

Use HEX for simple static colors, RGB/RGBA when you need alpha transparency, and HSL when building color palettes or design systems. HSL is the most human-readable format for adjusting brightness and saturation.

Does this tool work offline?

Yes. All conversions happen in your browser with zero network requests. Your data never leaves your device.

Part of 23+ free developer tools from BigDevSoon

Want to create your own tool?

Try our free Demo editor or start a 7-day trial with all features included.

Start Free Trial Open Demo Editor

No signup needed for demo editor

More Developer Tools

CSS

CSS Unit Converter

Convert between px, rem, em, %, pt, vw, and vh. Change one value and all others update instantly.

CSS

CSS Gradient Generator

Create beautiful CSS gradients with a visual editor. Linear, radial, and conic gradients with preset gallery.

CSS

Box Shadow Generator

Design CSS box shadows visually with live preview. Adjust offset, blur, spread, color, and inset.