Hex to RGB / RGB to Hex

Hex to RGB / RGB to Hex

Convert hexadecimal web colors to decimal RGB (Red, Green, Blue) pixel values and vice versa locally inside your web browser. Built with client-side CSS and color space parser engines, this utility computes color transformations in memory, ensuring that color codes or design parameters are never sent to remote servers.

Manual Conversion Calculations & Worked Example

Digital screens render colors by mixing red, green, and blue light. Each channel has an intensity value ranging from 0 to 255 (1 byte of data per channel, total of 24 bits for standard color):

1. 1HEX Representation (Base-16):

Hexadecimal uses sixteen symbols: 0-9 and A-F (where A=10, B=11, C=12, D=13, E=14, F=15).

A standard 6-character hex code represents three 2-character bytes in sequence:

HEX Code: #RRGGBB

• RR: Red channel intensity (hex)
• GG: Green channel intensity (hex)
• BB: Blue channel intensity (hex)

1. 2HEX to RGB Mathematical Conversion:

To convert a 2-character hex byte to decimal, multiply the first digit by 16 and add the value of the second digit:

Channel Value = (d_1 * 16) + d_2

• Example (#FF0000 - Red): Red channel FF = (15 * 16) + 15 = 255. Green 00 = 0. Blue 00 = 0. Result: rgb(255, 0, 0).
• Example (#004ac6): Red 00 = 0. Green 4A = (4 * 16) + 10 = 74. Blue C6 = (12 * 16) + 6 = 198. Result: rgb(0, 74, 198).

1. 3RGB to HEX Conversion:

To convert back, divide the decimal value by 16: the quotient becomes the first hex digit, and the remainder becomes the second hex digit.

[Input HEX Color (e.g. #004AC6)]
               |
               v
[Split into channel bytes: Red=00, Green=4A, Blue=C6]
               |
               v
[Convert each channel from Hex to Decimal: Red=0, Green=74, Blue=198]
               |
               v
[Output CSS Format: rgb(0, 74, 198)]

• Pure White: #FFFFFF translates to rgb(255, 255, 255).
• Pure Black: #000000 translates to rgb(0, 0, 0).
• Standard Blue: #004ac6 translates to rgb(0, 74, 198).

Encoding & Conversion Standards

• World Wide Web Consortium (W3C): CSS Color Module Level 3 and 4 Specifications.
• WHATWG: HTML Living Standard Guidelines on Color Inputs.
• MDN Web Docs: Guide on CSS Color Values and Conversions.

HEX to RGB Color Converter Online — Hex to RGB & RGB to Hex

This utility performs bi-directional conversion between HEX color codes (e.g. #004ac6) and RGB values (e.g. 0, 74, 198). It validates color codes, isolates red, green, and blue components, and outputs matching CSS-compliant styles.

• Output Swatch Doesn't Match: Verify that you entered the correct character counts. A standard hex code must be either 3 or 6 characters long (excluding the # sign).
• Error: Invalid HEX Color: Check if your input contains non-hex characters (letters outside of A-F).
• Results Aren't Loading: Ensure JavaScript is enabled in your browser settings.

What is the difference between HEX and RGB color models?

HEX and RGB represent the same color data in different numerical bases. RGB uses base-10 decimal numbers (0-255) for each channel, while HEX uses base-16 hexadecimal numbers (00-FF) to represent the same intensities.

Why is RGB used for screen displays?

Because screens are active light emitters. By combining red, green, and blue light (the primary additive colors) in varying intensities, screens can produce millions of distinct colors.

Are my color selections logged?

No. All calculations run locally on your device within your web browser sandbox.

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Typical Manual Conversion Errors

• Omitting the Hash Symbol (#) in Code: Forgetting to write the hash prefix when using hex values in CSS stylesheets (though our converter handles inputs with or without the hash).
• Using Invalid Characters: Entering letters outside the hexadecimal range (A-F), such as #FFGG00, which causes translation errors.
• Confusing Alpha Channel Formats: Attempting to convert transparency formats without utilizing rgba structures.