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Color Converter

Last updated:

Last updated:

Free color converter online — convert between HEX, RGB, HSL, and HSV color formats instantly. No signup required.

Convert between HEX, RGB, HSL, and HSV color formats. Real-time conversion with color preview. Works 100% in your browser.

#00D9FF
Click to pick a color

What the Color Converter Does and Why It Matters

The Color Converter translates a single colour between the formats designers and developers use most: HEX, RGB, HSL, and HSV. Enter a value in one format and the equivalents update instantly, with a live swatch so you can see the colour.

Different tools expect different formats — a design file might give HEX, a CSS variable might use RGB, and an adjustment might be easier in HSL. Converting reliably avoids the rounding mistakes that happen when you do it by hand.

How to Use Color Converter

  1. Enter a colour in any supported format (for example a HEX code).
  2. Read the equivalent RGB, HSL, and HSV values as they update.
  3. Check the preview swatch to confirm the colour.
  4. Adjust the value to fine-tune hue, saturation, or lightness.
  5. Copy the format you need for your stylesheet or design tool.
  6. Repeat for the next colour.

Supported Inputs and Limitations

Supported input

  • HEX colour codes (e.g. #3366ff)
  • RGB values
  • HSL or HSV values

What you get

  • Equivalent HEX, RGB, HSL, and HSV values
  • A live colour preview swatch
  • Copy-ready strings for CSS or design tools

Known limitations

  • Conversions between models can round slightly, so a round-trip may differ by a unit.
  • Alpha/transparency handling depends on the format; opaque values convert most cleanly.
  • Screen colour depends on display calibration and is not a substitute for a print colour profile.

Privacy and Security

All conversions happen in your browser with no network calls, so nothing you enter is sent to or stored by NovaTools. You can experiment with colours freely and privately.

Frequently Asked Questions

Which colour format should I use in CSS?

HEX and RGB are universally supported; HSL is convenient when you want to tweak hue or lightness directly. Modern browsers support all three, so choose whichever is easiest to reason about.

Why does a converted value differ slightly when I convert back?

Colour models map onto each other with small rounding at each step. The difference is usually a single unit and is visually imperceptible.

Does the preview match exactly what users will see?

It matches your display, but colours can vary between screens depending on calibration. For print work, rely on a proper colour profile rather than an on-screen swatch.

Related Tools

About Color Converter

Color representation varies across different formats, each with its own use cases. HEX codes are common in web development, RGB is used for screens, HSL is intuitive for humans, and HSV is popular in design software. This free online tool converts between all these formats instantly, helping designers and developers work efficiently with colors.

How to Use

  1. Use the color picker or enter a HEX value directly.
  2. Adjust RGB values individually if needed.
  3. All other formats update automatically in real-time.
  4. Click any Copy button to copy the desired format to your clipboard.
  5. Use the Random Color button to explore different colors.

Color Format Descriptions

  • HEX - Six-digit hexadecimal representation (e.g., #00D9FF)
  • RGB - Red, Green, Blue values from 0-255 (e.g., rgb(0, 217, 255))
  • HSL - Hue (0-360), Saturation (0-100%), Lightness (0-100%)
  • HSV - Hue (0-360), Saturation (0-100%), Value/Brightness (0-100%)

Frequently Asked Questions

Which color format should I use?

Use HEX for CSS/web development, RGB for screen-based media, HSL when you want to adjust lightness easily, and HSV for color picking interfaces. All represent the same color, just in different ways.

Is this tool accurate?

Yes, the conversions use standard color space mathematics. The calculations are performed locally in your browser with no rounding errors for whole number values.

Can I convert CMYK colors?

Currently, this tool supports HEX, RGB, HSL, and HSV. CMYK conversion requires color profile management and is best handled by professional design software.

Does the color preview show transparency?

No, this tool works with solid colors only (no alpha/transparency channel). For transparency, you would need RGBA or HSLA formats which include an alpha value.

Why do HSL and HSV hue values match?

HSL and HSV share the same hue calculation - they differ in how they represent saturation and brightness/lightness. HSV uses Value (brightness) while HSL uses Lightness.

Recommended next reading

Use these practical guides to understand when this tool is the right choice, what to check before exporting, and which workflow usually comes next.