Hex to RGB

What is Hex to RGB?

Hex to RGB converts CSS hexadecimal color codes (#RRGGBB or shorthand #RGB) into their RGB decimal component values (0-255 per channel) and vice versa. It handles 3-digit shorthand (#F0A expands to #FF00AA), case-insensitive input, and validation of invalid hex characters. The tool also displays the color preview, HSL equivalent, and CSS color function syntax for both rgb() and the modern CSS Color Level 4 format using spaces instead of commas.

Frontend developers converting between color formats, designers handing off color specifications to developers, and anyone debugging color values in CSS. The tool runs entirely in your browser — your data never leaves your device.

How to Use Hex to RGB

1. Enter a hex color code (with or without the # prefix) to convert to RGB
2. Or enter R, G, B values (0-255) to convert to hex format
3. View the color preview, hex code, RGB values, and HSL equivalent simultaneously
4. Copy the output in your preferred format — hex, rgb(), hsl(), or CSS Color Level 4 syntax

Common Use Cases

• Converting design tool hex colors to RGB values for CSS rgb() function usage
• Translating between hex and RGB when switching between design tools and code
• Extracting individual R, G, B channel values from a hex code for programmatic color manipulation
• Verifying hex-to-RGB conversions when debugging color rendering issues in applications

Pro Tips

• The shorthand #ABC expands to #AABBCC by doubling each digit — this only works for 3-digit codes; you cannot shorten #A1B2C3 to #A1B2C3 because there is no lossless 3-digit representation
• To mentally estimate brightness from hex: higher values are brighter — #000000 is black, #FFFFFF is white, and equal R=G=B values produce grays (#808080 is mid-gray)
• The CSS Color Level 4 syntax uses spaces: rgb(255 128 0) instead of the legacy rgb(255, 128, 0) — both work in modern browsers, but the space syntax also supports an alpha channel: rgb(255 128 0 / 50%)

Why Use This Tool?

• Privacy-first: All processing happens locally in your browser. No data is transmitted to any server.
• No installation required: Works in any modern browser on desktop or mobile.
• Completely free: No account, no credit card, no usage caps.
• Fast and reliable: Powered by modern Web APIs for near-instant results.

Related Concepts

Learn more about related topics: CSS colors, sRGB color space, Color notation, HSL conversion.

Frequently Asked Questions