If you've ever received a design spec with a hex code and needed HSL for a CSS gradient, you know the frustration. Color format conversion shouldn't require opening Photoshop.
HEX (#FF6633): The web's lingua franca. 6 hex digits = 3 bytes (red, green, blue). Compact but opaque -- you can't tell by looking whether #996633 is more red or more green.
RGB (rgb(255, 102, 51)): Same as HEX but decimal. Easier to tweak programmatically. Good when you need to adjust individual channels by a known amount.
HSL (hsl(20, 100%, 60%)): The most intuitive format for humans. Hue (0-360) is the color wheel position. Saturation (0-100%) is intensity. Lightness (0-100%) is brightness. Want a darker version of the same color? Drop lightness. Want a more muted version? Drop saturation. HSL makes these adjustments natural.
When to use each:
- HEX for static CSS values and design handoff
- RGB for canvas operations and programmatic color generation
- HSL for theming systems and when you need color variants
Practical tip: Store your design tokens in HSL. Generating hover states, disabled variants, and dark mode equivalents becomes trivial -- just adjust lightness. Our color converter handles all three formats plus color name lookup, contrast checking, and palette generation.