RGB to Hex Color Converter

Convert RGB color values (255, 87, 51) to their hexadecimal color code equivalent (#FF5733) for use in HTML, CSS, and web design.

What Does This Tool Do?

When you have RGB color values — three numbers representing red, green, and blue from 0 to 255 each — and need the hex code equivalent for HTML, CSS, or a design tool, this converter does it instantly. Just enter your RGB numbers and get the corresponding hex code.

Key Features

🎨

Visual Preview

Shows a color swatch so you can confirm the color you're converting.

📋

Formatted Output

Output includes the # prefix, ready to paste directly into CSS or HTML.

⚡

Instant

Converts immediately as you type the RGB values.

✅

Validates Range

Confirms each component is in the valid 0-255 range.

How to Use This Tool

Enter the red, green, and blue values (each from 0 to 255).
The hex code appears instantly.
Copy and paste the hex code into your CSS, HTML, or design tool.

How It Works

Each RGB component (0-255) is converted to its two-character hexadecimal equivalent using base-10 to base-16 conversion. The three hex pairs are concatenated with a # prefix to produce the standard 6-character hex color code.

Common Use Cases

💡 CSS & HTML

Convert RGB values from design specs to hex codes for use in HTML color attributes.

💡 Design Handoff

Convert colors between RGB (used in many design tools) and hex (used in web code).

💡 Brand Colors

Convert brand color RGB specifications to hex for use in stylesheets.

💡 Cross-Platform

Move colors between tools that use different color format conventions.

Frequently Asked Questions

Is the output uppercase or lowercase?

The hex output is uppercase (e.g., #FF5733), which is the most widely used convention.