HEX to RGB Converter
Convert hex colors to rgb format instantly.
Advertisement
HEX to RGB Conversion
HEX colors are a compact way to represent RGB values using base-16 notation. Each pair of hex digits represents one color channel: Red, Green, Blue — each ranging from 0 (00 hex) to 255 (FF hex).
How the Conversion Works
#FF5733→ R: FF (255), G: 57 (87), B: 33 (51)- Each hex pair: convert first digit × 16 + second digit
- F = 15, so FF = 15×16 + 15 = 255 (maximum)
- Shorthand:
#F53expands to#FF5533(each digit doubled)
Color Format Comparison
- HEX —
#FF5733— compact, copy-friendly, 6 or 8 characters (with alpha) - RGB —
rgb(255, 87, 51)— explicit channel values - HSL —
hsl(11, 100%, 60%)— perceptually intuitive: hue, saturation, lightness - RGBA/HSLA — include alpha channel for transparency (0–1 scale)
What does the # symbol mean in hex colors?
The # prefix indicates that the following value is a hexadecimal color code. It has no mathematical significance — it's just a CSS convention to distinguish color notation from other values. In some contexts (JavaScript canvas, SVG) you may see hex colors with or without the # depending on the API.
How do I add transparency to a hex color?
Append two hex digits for the alpha channel: #FF573380 where 80 = 128/255 ≈ 50% opacity. This 8-character format is supported in all modern browsers. Alternatively, use rgba(255, 87, 51, 0.5) or CSS color-mix(in srgb, #FF5733 50%, transparent).
When should I use HEX vs RGB in CSS?
HEX is shorter and common in design tools — use it for static color values. RGB is more readable when you need to explain what the color is. HSL is best when you'll programmatically adjust colors (e.g., lighten by 10%). Modern CSS also supports oklch() for perceptually uniform color manipulation in design systems.