Color Converter (HEX, RGB, HSL)
Pick a color or type a HEX code to instantly get its RGB and HSL values. Copy whichever format you need.
Reviewed by the ToolNestr Editorial Team — July 2026
How color conversion works
Color conversion translates a colour value between different representations: HEX (hexadecimal), RGB (red, green, blue), and HSL (hue, saturation, lightness). Each format describes the same colour in a different way.
HEX is a base-16 representation of RGB values. RGB directly specifies the intensity of each colour channel from 0–255. HSL separates the colour into its hue (the colour angle 0–360°), saturation (intensity 0–100%), and lightness (brightness 0–100%).
Worked example
Converting the indigo colour #6366f1 to RGB and HSL.
Color format popularity among developers
Which color formats developers reach for most often in their daily work.
David Kim
UI designer who creates mockups in HEX and converts values to RGB for accurate developer handoff documentation.
Anna Mueller
Frontend developer who switches between HEX and HSL to programmatically adjust brightness and saturation for dark mode themes.
Carlos Rivera
Brand designer who verifies corporate colors match exactly across web, print, and social media by checking them in all three formats.
Yuki Tanaka
App developer who converts HEX from design specs into RGB for programmatic use in Canvas rendering and SVG generation.
| Format | Example | Best for |
|---|---|---|
| HEX | #4f46e5 | CSS, HTML, design tools |
| RGB | rgb(79, 70, 229) | Canvas, WebGL, API responses |
| HSL | hsl(243, 75%, 59%) | Dynamic color adjustments, themes |
| RGBA | rgba(79, 70, 229, 0.8) | Overlays, shadows, transparency |
| HSLA | hsla(243, 75%, 59%, 0.8) | Themed transparent elements |
How to use the Color Converter
Pick or paste a color
Click the color swatch to open your system picker, or type a HEX code directly into the input field.
View all conversions
The RGB and HSL values update instantly. The swatch shows your selected color so you can verify it visually.
Copy the right format
Click Copy next to HEX, RGB, or HSL to paste the exact representation you need into your CSS or design tool.
Tips for working with color codes
Use the visual picker for exploration
Click the large coloured swatch to open your system colour picker. As you drag the cursor, HEX, RGB and HSL all update in real time — a great way to explore the colour space.
Shorthand HEX codes work too
3-digit codes like #fff or #09c are automatically expanded to 6 digits (#ffffff, #0099cc) so you get accurate RGB and HSL values every time.
HSL is best for programmatic adjustments
When you need to darken, lighten, or saturate a color in code, HSL is much more intuitive than HEX or RGB because hue, saturation, and lightness are separate values you can modify independently.
Limitations and considerations for color conversion
sRGB color space assumption
This tool converts colors within the sRGB color space, which is the standard for web content and most digital displays. However, modern monitors and professional workflows increasingly use wider gamuts such as Display P3 or Adobe RGB. An sRGB representation of a color may not accurately reflect how that color appears on a wide-gamut display. If you are designing for print, HDR video, or high-end displays, consider using tools that support color-managed workflows with ICC profiles.
No alpha channel support in this tool
HEX, RGB, and HSL formats in this tool represent solid colors without transparency. While RGBA and HSLA are common in CSS for specifying colors with alpha values, this converter focuses on the three core formats. If you need to work with transparency, you can manually add an alpha channel to the RGB or HSL output values in your code. A future enhancement may include full RGBA and HSLA support.
Device-dependent appearance differences
The same HEX code can look noticeably different on different screens due to variations in monitor calibration, brightness settings, color temperature, and panel technology such as IPS, OLED, or TN. sRGB values are device-independent in theory, but actual on-screen appearance depends on your specific hardware. For brand-critical color work, use a hardware-calibrated monitor and verify colors in your target output medium.
HEX shorthand expansion behavior
When you enter a 3-digit HEX code like #f80, the tool expands it to #ff8800 by doubling each digit. This is the standard CSS behavior, but it is worth noting that this expansion assumes each shorthand digit represents a doubled value. The result is a lossless approximation of the original 12-bit color value. For precise color specification, always use the full 6-digit or 8-digit with alpha format.
Frequently asked questions
What’s the difference between HEX, RGB and HSL?
They’re three ways of describing the same color. HEX (#4f46e5) is common in web design, RGB sets red/green/blue levels, and HSL uses hue, saturation and lightness, which is intuitive for adjusting colors.
Can I type a HEX code directly?
Yes. Enter a 3- or 6-digit HEX code (with or without the #) and the RGB and HSL values update instantly.
Can I copy the values?
Yes — each format has a copy button so you can paste it straight into your CSS or design tool.
Is it private?
Yes, the conversion runs entirely in your browser.
What is the color picker for?
The color picker lets you visually choose any color. Click the large swatch area to open your system color picker and the values update automatically.
Can I convert HSL back to HEX?
Enter the HEX code and the HSL value updates automatically. For reverse conversion, you would need to enter the HSL values as HEX manually.
What about 3-digit HEX codes?
3-digit HEX codes (like #fff) are automatically expanded to 6 digits (like #ffffff) for accurate conversion.
What color space does this tool use?
The tool uses the sRGB color space, which is the standard for web and most digital displays. HSL values are calculated from sRGB using the standard algorithm.
Why do my colors look different on different screens?
Color appearance varies by monitor calibration, brightness, and color gamut. sRGB values are device-independent, but actual on-screen appearance depends on your display hardware.
Can I convert between RGBA and HSLA as well?
This tool focuses on solid colors (HEX, RGB, HSL). For alpha transparency, you can manually add an alpha channel to the RGB or HSL values in your code.