HEX vs RGB: Understanding Color Codes in Web Design
A complete guide to HEX and RGB color codes: how they work, when to use each, and how to convert between them instantly.
Color codes are fundamental to web design. Whether you’re writing CSS, working in a design tool like Figma, or analyzing images, you’ll encounter HEX and RGB color formats constantly.
What are HEX Colors?
HEX (hexadecimal) colors use a 6-character code preceded by a # symbol. Each pair of characters represents the Red, Green, and Blue channels in hexadecimal (base-16) notation.
#8b5cf6 = R: 8b, G: 5c, B: f6
= R: 139, G: 92, B: 246 (in decimal)What are RGB Colors?
RGB colors use three decimal values (0–255) representing Red, Green, and Blue intensity.
rgb(139, 92, 246) /* Same violet as #8b5cf6 */HEX vs RGB: Which to Use?
| Use case | Format |
|---|---|
| CSS color properties | Both work |
| Design tools (Figma, Sketch) | HEX is common |
| Canvas/image processing | RGB |
| Color arithmetic/manipulation | RGB |
| Reading/sharing colors | HEX (shorter) |
Converting HEX to RGB
The conversion is straightforward:
- Take the 6-digit HEX code
- Split into three 2-digit pairs
- Convert each from base-16 to base-10
Example: #ff6b35
- R:
ff→ 255 - G:
6b→ 107 - B:
35→ 53
Use ViaConvert’s HEX to RGB converter to do this instantly.
Understanding HSL
HSL (Hue, Saturation, Lightness) is another color model that’s often more intuitive for designers:
- Hue: Color wheel position (0–360°)
- Saturation: Color intensity (0–100%)
- Lightness: Brightness (0–100%)
hsl(262, 90%, 66%) /* Same violet */Tips for Color Work
- Use variables: Define your colors as CSS custom properties
- Check contrast: Ensure sufficient color contrast for accessibility
- Use a color picker: ViaConvert’s Color Picker shows all formats simultaneously
Conclusion
Both HEX and RGB are essential tools in a web developer’s toolkit. Use ViaConvert’s free HEX to RGB converter and RGB to HEX converter to switch between formats effortlessly.