Smartweb.tools Convert colors between HEX, RGB and HSL formats instantly with a live color preview and one-click copy for each format.

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Color Converter

Convert colors between HEX, RGB and HSL formats instantly with a live color preview and one-click copy for each format.

Understanding web color formats

Web colors can be expressed in several formats. The three most common are HEX, RGB, and HSL. Each format has different uses depending on the context in CSS, design tools, and code.

HEX color codes

HEX codes use six hexadecimal digits (0–9, A–F) to represent a color. Each pair of digits represents the red, green, and blue channel on a scale from 00 (0) to FF (255). Example: #FF5733 means Red=255, Green=87, Blue=51. HEX codes are widely used in HTML, CSS, and design tools like Figma and Adobe XD.

RGB color format

RGB (Red, Green, Blue) expresses each color channel as a number from 0 to 255. Example: rgb(255, 87, 51). RGB is intuitive to adjust manually and is the standard format in many programming environments. It is also used in CSS for opacity control with rgba().

HSL color format

HSL (Hue, Saturation, Lightness) is the most human-friendly format. Hue is the color angle (0–360°), Saturation is how vivid the color is (0–100%), and Lightness controls brightness (0–100%). Example: hsl(11, 100%, 60%). HSL is excellent for creating color variations — adjusting only the Lightness creates shades, while adjusting Saturation creates tones.

Which format to use in CSS

All three formats work in modern CSS. HEX is shortest for pure colors. RGB is useful for calculations and opacity (rgba). HSL is best for design systems where you need logical color scales.

How to use Color Converter

  1. Enter a HEX code directly in the HEX field, or use the color picker.
  2. Alternatively, adjust the R, G, B sliders or input fields.
  3. The tool updates all three formats simultaneously.
  4. Click Copy next to HEX, RGB, or HSL to copy the value you need.

Why this tool is useful

  • Live color preview as you edit any value.
  • One-click copy for each format separately.
  • Color picker for visual selection.
  • All three popular CSS formats in one tool.

Example use cases

Convert #0284c7: RGB = rgb(2, 132, 199) · HSL = hsl(200, 98%, 39%)

Convert rgb(255, 165, 0): HEX = #FFA500 · HSL = hsl(39, 100%, 50%) — this is orange.

Frequently asked questions

What is the difference between HEX and RGB colors?

HEX codes represent colors using six hexadecimal digits (e.g. #FF5733). RGB uses three decimal numbers from 0–255 (e.g. rgb(255, 87, 51)). Both represent the same colors; HEX is shorter while RGB is more intuitive for manual adjustments.

What is HSL and when should I use it?

HSL (Hue, Saturation, Lightness) is the most designer-friendly color format. Adjusting only Lightness creates shades of the same color, making it ideal for creating color scales in design systems. Use HSL in CSS when you need related color variants.

Does this tool support RGBA or HSLA?

This tool converts between HEX, RGB, and HSL. For RGBA or HSLA, simply add your desired alpha/opacity value to the RGB or HSL output. For example: rgb(2, 132, 199) with 80% opacity becomes rgba(2, 132, 199, 0.8).

Why does my HEX code show a wrong color?

Make sure your HEX code starts with # and uses exactly 6 hexadecimal characters (0–9, A–F). Three-character shorthand (like #FFF for white) is not currently supported — use the full 6-character version (#FFFFFF).

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