RGB to HEX Converter
Convert RGB values to HEX format for CSS and design.
Input Settings
Output
Hex
#33455FRGB
rgb(51 69 95)HSL
hsl(215 30 29)HSV
hsv(215 46 37)OKLCH
oklch(0.29 0.120 215)CMYK
cmyk(46%, 27%, 0%, 63%)About RGB to HEX Converter
An RGB to HEX converter is a digital tool that transforms RGB (Red, Green, Blue) color values into their equivalent hexadecimal color codes. This conversion is crucial for web developers and designers who need to translate color values from design software that outputs RGB into HEX format required for CSS and web development.
Why use a RGB to HEX Converter?
Using an RGB to HEX Converter ensures accurate color translation between different design platforms and development environments. Many design tools like Photoshop, Illustrator, and Figma display colors in RGB format, while web development primarily uses HEX codes for CSS styling. This tool eliminates manual conversion errors and speeds up your workflow.
Who is it for?
This tool is essential for web developers writing CSS styles, frontend developers implementing design mockups, graphic designers preparing assets for web use, UI/UX designers ensuring color accuracy across platforms, and anyone working with digital colors who needs reliable RGB to HEX conversion.
How to use the tool
Enter your RGB values in the input fields (Red: 0-255, Green: 0-255, Blue: 0-255)
The tool automatically converts and displays the equivalent HEX color code
Copy the generated HEX code (including the # symbol) for use in your CSS or design files
Use the HEX code directly in your web projects or share it with your team
Frequently Asked Questions
How do I convert RGB to HEX?
Enter the three RGB values (red, green, blue — each 0-255), and the tool outputs the matching 6-digit hex code prefixed with `#`. Accepts comma-separated values (255, 87, 51), `rgb(255, 87, 51)` CSS syntax, or individual fields. Copy the hex code to clipboard or paste directly into CSS, design tools, or any context expecting web colours. Conversion runs entirely in your browser — values never leave the device.
What's the difference between RGB and HEX colour formats?
Both represent the same colour space using the same channels (red, green, blue) — they're different notations for identical data. RGB uses decimal 0-255 per channel (e.g. `rgb(255, 87, 51)`). HEX uses hexadecimal #RRGGBB (e.g. `#FF5733`), where each pair is one channel: FF=255, 57=87, 33=51. HEX is the web/CSS standard and is more compact. RGB is more readable for humans calculating values by hand. Converting between them is exact and lossless — same colour, different writing.
Is the RGB to HEX conversion accurate?
Yes — exactly accurate and lossless. RGB and HEX represent identical data in the same colour space; conversion is just changing the number base from decimal to hexadecimal. There's no rounding, no approximation, no gamut difference. `rgb(255, 87, 51)` and `#FF5733` describe the same screen pixels. The only quirk: HEX `#abc` is the 3-digit shorthand expanding to `#aabbcc`. The tool outputs full 6-digit hex for clarity; both notations are valid CSS.
Can I use HEX values directly in CSS?
Yes — HEX is the most common colour notation in CSS. Use it anywhere a colour is expected: `color: #FF5733;`, `background: #FF5733;`, `border: 1px solid #FF5733;`. Modern CSS also supports HEX with alpha as 8-digit form (`#FF5733AA` where AA is opacity 0-FF). All modern browsers handle 3-digit, 6-digit, and 8-digit HEX. Design tools (Figma, Sketch, Adobe XD), code editors, and developer tools all default to HEX for colour input.
What format should I enter RGB values in?
Three accepted formats. (1) Comma-separated: `255, 87, 51` or `255,87,51`. (2) CSS syntax: `rgb(255, 87, 51)` or `rgb(255 87 51)` (the modern space-separated CSS Color 4 syntax). (3) Three individual fields, one per channel. Whitespace around values is tolerated. Each channel must be 0-255; values outside that range are clamped. For semi-transparent colours, see the RGBA / 8-digit hex question below.
Does this handle transparency (RGBA / 8-digit HEX)?
Yes — provide an alpha value (0-255 or 0.0-1.0) along with RGB, and the tool outputs 8-digit HEX with alpha in the AA position (`#RRGGBBAA`). Example: `rgba(255, 87, 51, 0.5)` → `#FF573380` (0.5 alpha = 0x80 = 128 in the AA channel). 8-digit HEX is supported in all modern browsers (since 2017). For older browsers, use the `rgba(...)` CSS function instead.
How do I generate lighter or darker shades of a colour?
Convert RGB to HSL via [HSL to RGB](/tools/hsl-to-rgb/)'s reverse direction (or directly via CSS Color 4), then adjust the lightness value. HSL's L channel makes shading intuitive: 50% is the colour, 70% is lighter, 30% is darker, 95% is near-white. Modify L while keeping H and S fixed for a clean shade ladder. This is much harder in RGB or HEX, where there's no single 'lightness' parameter. For automated palette generation, use [Monochromatic Palette Generator](/tools/monochromatic-palette-generator/).
What's the reverse — how do I convert HEX back to RGB?
Use [HEX to RGB](/tools/hex-to-rgb/) — paste any `#RRGGBB` or `#RGB` shorthand and get the three 0-255 channel values. The reverse conversion is also exact and lossless (same colour space, different notation). For more colour-format conversions in one tool, try [CSS Color Converter](/tools/css-color-converter/) which handles RGB/HEX/HSL/HWB simultaneously.
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