RGB to Hex Converter

Convert RGB color values to hexadecimal codes — instant conversion with live preview

What Is RGB to Hex Conversion?

RGB to hex conversion translates decimal Red, Green, Blue values (each ranging 0-255) into a hexadecimal color code string. The process converts each decimal value to its two-digit hexadecimal equivalent and concatenates them with a # prefix. For example, RGB(59, 130, 246) becomes #3B82F6 where 59 decimal = 3B hex, 130 = 82, and 246 = F6.

This conversion is commonly needed when transferring colors from JavaScript canvas operations (which use RGB), programmatic color generation (random colors, color interpolation), design system documentation (which typically standardizes on hex codes), CSS authoring (where hex is the most compact notation), and converting between different design tools. Hex codes are the most widely recognized color format in web development, making them the preferred format for CSS files, design tokens, and color system documentation.

How to Convert RGB to Hex

1. Enter your Red, Green, and Blue values (0-255 each) in the input fields
2. The hex code appears instantly with a live color preview swatch
3. Adjust individual R, G, B sliders to fine-tune the color visually
4. Copy the hex code with or without the # prefix
5. CSS output in multiple formats (hex, rgb, hsl) is available for copying

Why Use PinusX RGB to Hex Converter?

PinusX converts colors with 100% client-side processing in your browser. No data is sent to any server — all color math, preview rendering, and CSS generation happens locally. This is consistent with PinusX's privacy-first approach to developer tools. In November 2025, jsonformatter.org leaked over 80,000 user credentials from server-side processing, demonstrating that even simple utility tools can compromise user data when they involve servers. PinusX avoids this by running everything in your browser tab with zero network requests.

Frequently Asked Questions

How do I convert RGB to hex manually?

Divide each RGB value by 16. The quotient is the first hex digit, the remainder is the second. Use A-F for values 10-15. For example, 246 / 16 = 15 remainder 6, so F6. Alternatively, use the formula: hex = value.toString(16).padStart(2, '0') in JavaScript. Our tool does this instantly for all three channels.

What if my RGB values are decimals?

Standard RGB uses integers 0-255. If you have fractional RGB values (common in some color libraries that use 0.0-1.0 ranges), multiply by 255 and round to the nearest integer before conversion. For example, (0.23, 0.51, 0.96) becomes (59, 130, 245) after multiplying by 255.

Can I include alpha in the hex code?

Yes. An 8-character hex code includes alpha: #RRGGBBAA. Convert your alpha value (0-255 or 0.0-1.0) to a 2-digit hex value and append it. For 50% opacity: 128 decimal = 80 hex, so rgb(59, 130, 246, 0.5) becomes #3B82F680. Note that 8-digit hex is supported in modern browsers but not in older ones.

What is the hex code for common colors?

Black: #000000, White: #FFFFFF, Red: #FF0000, Green: #00FF00, Blue: #0000FF, Yellow: #FFFF00, Cyan: #00FFFF, Magenta: #FF00FF. Web-safe colors use only the values 00, 33, 66, 99, CC, FF for each channel, creating a palette of 216 colors that display consistently across all devices.

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