How can I type text in color

need to make an invite but cannot type text in color how do I do it

You tagged your question with “Calc”, so I answer for that (but in Writer it’s similar):

Hit F11 to bring up stylist window.

Create (or alter an existing) CELL style template
On second or third tab (“Font effects”) you can choose a color

Apply that style to your cells.

You may have to de-select Tools> Options...>LibreOffice Calc >View>Display> Value highlighting