- How do I pick a color and get its hex code?
- Drag the point around the square to set saturation and brightness, and the slider beneath it to set the hue. The hex code updates as you move and can be copied in one click. If you already have a code, type it into the hex box instead and the picker moves to it.
- What do the square and the slider actually control?
- The slider is hue, the quality that makes red red. The square is the other two axes at that hue: saturation runs left to right, from gray to the pure color, and brightness runs bottom to top, from black to full. Three numbers describe any color on a screen, and those are the three.
- Can I pick a color from an image or from my screen?
- For an image, use the palette extractor, which reads the picture and returns the colors that are genuinely in it with a role assigned to each. This picker works the other way round: you choose the value and it gives you the codes.
- Which code should I use, hex or RGB or HSL?
- Hex and RGB describe the same thing and convert exactly, so use whichever your tool expects. HSL is worth reaching for when you want to change a color rather than state one, because adjusting a lightness number is predictable in a way that adjusting three channels is not.
- Is anything sent to a server?
- No. The picker runs entirely in your browser, and the color you choose lives in the address bar, so sharing the exact color is just sharing the link. Nothing is stored and nothing is uploaded.