RGB to HEX Converter

Convert RGB color values into HEX codes instantly.

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What Is an RGB to HEX Converter?

An RGB to HEX converter translates color values from the RGB (Red, Green, Blue) color model into hexadecimal (HEX) codes used in web design and development. RGB defines colors using three numbers between 0 and 255, while HEX represents the same color as a six-character code starting with #. This tool performs that conversion instantly, giving you the HEX equivalent of any RGB color.

How RGB to HEX Conversion Works

RGB colors are additive: red, green, and blue light combine to create the final color. Each channel has a value from 0 (no light) to 255 (full intensity). The HEX code is simply a base-16 representation of those three values.

The conversion follows this logic:

Take the red value (0–255) and convert it to a two-character hexadecimal number
Take the green value (0–255) and convert it to a two-character hexadecimal number
Take the blue value (0–255) and convert it to a two-character hexadecimal number
Combine them with a # prefix

For example, RGB 255, 0, 0 becomes #FF0000 because 255 in decimal equals FF in hexadecimal, and 0 equals 00.

How to Use the Converter

Enter the red value (0–255) in the first input field
Enter the green value (0–255) in the second input field
Enter the blue value (0–255) in the third input field
The HEX code updates automatically as you type

No button pressing required. The conversion happens in real time.

Example Conversion

Suppose you have a medium blue color with these RGB values:

Red: 70
Green: 130
Blue: 180

The converter calculates:

70 in decimal = 46 in hexadecimal
130 in decimal = 82 in hexadecimal
180 in decimal = B4 in hexadecimal

Result: #4682B4 (Steel Blue).

Understanding the Output

The HEX code is always six characters long (plus the #), with two characters per color channel. The format is case-insensitive, meaning #FF0000 and #ff0000 are identical. Most browsers and design tools accept both uppercase and lowercase.

If you enter values outside the 0–255 range, the tool will not produce a valid conversion. Always verify your RGB values are within the standard range.

Common Mistakes

Using values above 255 — RGB channels cannot exceed 255. Values like 300 or 1000 are invalid.
Confusing decimal and hexadecimal — The tool expects decimal RGB values (0–255), not hex codes.
Omitting the # symbol — The HEX code includes the # prefix. Some CSS parsers may still work without it, but including it is standard practice.

Practical Use Cases

Web development — Convert design specs from RGB to HEX for CSS stylesheets
Graphic design — Match colors between software that uses different color formats
Digital art — Translate color palettes for consistent rendering across tools
Accessibility testing — Verify color contrast ratios using HEX codes in WCAG checkers

FAQ

What is the difference between RGB and HEX?

RGB and HEX are two ways of representing the same color. RGB uses three decimal numbers (0–255) for red, green, and blue. HEX uses a six-character hexadecimal code prefixed with #. Both describe the same color values, just in different notation.

Can I convert HEX back to RGB?

Yes. The reverse conversion splits the HEX code into three two-character pairs, then converts each pair from hexadecimal to decimal. Many online tools offer both directions.

Why do some HEX codes have 3 characters instead of 6?

Three-character HEX codes are shorthand for colors where each channel has a repeated digit, like #F00 for #FF0000. The browser expands each character by doubling it. This only works when each pair has identical digits.

Does the # symbol matter?

Yes. The # prefix tells the browser or design tool that the following characters represent a hexadecimal color. Without it, the value may be interpreted as something else or ignored.

What happens if I enter a decimal value like 128.5?

RGB values must be whole numbers (integers) between 0 and 255. Decimal values are not valid. The tool may round or reject them depending on implementation.