ToolBox.Online

Hex to RGB Converter — Convert HEX Color to RGB Online [2026]

Convert HEX color codes to RGB values and vice versa. See a live color preview, copy results in multiple formats (RGB, HEX, HSL). Free browser-based color converter — no signup needed.

hsl(217, 91%, 60%)

What is Hex to RGB Converter?

HEX and RGB are two of the most common ways to represent colors in web development and digital design. **HEX (Hexadecimal)** colors are written as a # followed by six hexadecimal digits — two for red, two for green, two for blue. For example, #FF5733 means red=FF (255), green=57 (87), blue=33 (51). HEX is the standard color format in CSS, HTML, and most design tools. **RGB (Red, Green, Blue)** represents colors as three decimal values from 0 to 255. The same color above would be rgb(255, 87, 51). RGB is used in CSS functions, image processing, and programmatic color manipulation. **HSL (Hue, Saturation, Lightness)** is a third format that describes color in terms more intuitive to humans: the hue angle (0-360°), saturation percentage, and lightness percentage. This converter shows all three formats for any color you enter.

How to Use Hex to RGB Converter

Enter a HEX color code (e.g. #3B82F6 or 3B82F6) in the hex input field — the RGB values update instantly along with a live color preview swatch. Alternatively, enter R, G, and B values (0-255) to convert from RGB to HEX. Use the copy buttons to copy the color in your preferred format: hex (#3B82F6), rgb(59, 130, 246), or HSL. The color preview swatch updates in real time as you type.

How Hex to RGB Converter Works

The converter performs simple mathematical transformations between color formats: **HEX → RGB:** The 6-digit hex string is split into three pairs (RR, GG, BB). Each pair is parsed from base-16 to base-10, yielding values 0-255. **RGB → HEX:** Each decimal value (0-255) is converted to a two-digit hexadecimal string and concatenated with a # prefix. **RGB → HSL:** The R, G, B values are normalized to 0-1. The max and min channel values determine lightness. Saturation is calculated from the difference between max and min relative to lightness. Hue is derived from which channel is dominant and the ratios between channels, mapped to a 0-360° angle. All conversions happen instantly in your browser with no server calls.

Common Use Cases

  • Converting HEX colors from design mockups to RGB values for CSS
  • Translating RGB values from image editors to HEX for web development
  • Quickly previewing what a HEX color looks like before applying it
  • Getting HSL values for more intuitive color adjustments in CSS
  • Copying color values in multiple formats for different tools and codebases
  • Learning the relationship between HEX and RGB color representations

Frequently Asked Questions

What is the difference between HEX and RGB color formats?

HEX uses hexadecimal (base-16) notation with a # prefix, like #FF5733. RGB uses three decimal numbers from 0-255, like rgb(255, 87, 51). They represent the exact same colors — just in different number systems. HEX is more compact and commonly used in CSS/HTML, while RGB is more intuitive for programmatic color manipulation.

Do I need the # symbol when entering a HEX color?

No, this converter accepts HEX colors with or without the # prefix. You can enter either #3B82F6 or 3B82F6 and get the same result. The tool will display the output with the # prefix included.

What is HSL and why is it shown?

HSL stands for Hue, Saturation, Lightness. It represents colors in a way that is more intuitive for humans: hue is the color angle (0-360°), saturation is how vivid the color is (0-100%), and lightness is how light or dark it is (0-100%). HSL makes it easier to create color variations by adjusting individual properties.

Can I convert RGB to HEX with this tool?

Yes! This tool is fully bidirectional. Enter R, G, B values (0-255) in the RGB input fields, and the HEX equivalent will update automatically. You can also start with HEX and get the RGB values.

What are valid HEX color values?

Valid HEX colors use digits 0-9 and letters A-F. A 6-digit HEX like #3B82F6 specifies red (3B), green (82), and blue (F6). 3-digit shorthand like #F00 is expanded to #FF0000. This tool accepts both 3-digit and 6-digit HEX codes.

Are the conversions accurate?

Yes, the HEX-to-RGB and RGB-to-HEX conversions are lossless and mathematically exact. The HSL conversion may have very minor rounding in the decimal places, but it is accurate for all practical design purposes.

Related Tools