@educatedguess911
The color scale is shown in right bottom corner. The color palette give you the wind speed. Note you can change the units by clicking them.

Capture d’écran 2020-12-25 à 19.02.53.png

For a detailed overview of the colors used for wind and gusts, you can select Settings and then Customize color scale to see the complete color palette according to the speed.

Capture d’écran 2020-12-25 à 19.04.06.png

Note you can change these colors:
https://community.windy.com/topic/10336/customize-the-color-scales-of-windy-layers?_=1608919687347