Hello. Following are examples of various colors and how they appear on the background you have chosen.

This is blue #0000FF

This is white

This is forest green #228b22

This is Lemon Chiffon 1 #FFFACD

This is Red 2 #EE0000

This is DarkOrchid4 #68228B

This is Chocolate4 #8B4513

This is Green1 #00FF00

This is Yellow