Three color pickers and RGB color charts that you can use to get RGB values and names corresponding to those values.
FasLed does not, as of this writing, support the names of all colors. The list of supported colors is below.
Not that each of these services do not allow for linking out so you will have to copy the url and past it into your browser.
These charts are very useful for making pallets.
Color Chart 1 – https://www.rapidtables.com/web/color/html-color-codes.html
Color Chart 2 – https://www.rapidtables.com/web/color/RGB_Color.html