The 3-digit hex code is a shorthand for some 6-digit hex codes. Where r, g, and b represent the red, green, and blue components with values between 0 and f. The 3-digit hex code can only be used when both the values (RR, GG, and BB) are the same for each component.

Hex color codes start with a pound sign or hashtag (#) and are followed by six letters and/or numbers. The first two letters/numbers refer to red, the next two refer to green, and the last two refer to blue. The color values are defined in values between 00 and FF (instead of from 0 to 255 in RGB).

Add a new color: Select the plus icon, then pick a color or enter a hex code. Change a color: Select the color you want to change, then pick a color or enter a hex code. Delete a color: Hover over the color tile, then select close icon. Add a palette: Select Add palette.