You may enter custom colors in either hex or HSL format.

As Hex Codes

You may use 3 or 6 character hex format.

  • #ff9999
  • #5ed

You may also enter captial letters, but GraphFree will reformat them to lower case for you.

As HSL

  • hsl(240, 30%, 95%)

GraphFree will also accept variants such as hsl(240 30 95) and reformat them for you.

Color Pickers

If you want a color picker to help you find the right color code, there are a multitude of such tools online. The Atmos color picker (offsite, not controlled by GraphFree) is a fine choice as of this writing.