The hex color #77d9dd is a light color. The web-safe version is Hex
#66CCCC. A complementary color is
#882622. The grayscale version is
#BABABA. A 20% lighter version of the original color is
#AAFFFF, and Hex
#44A6AA is the 20% darker color. If the color is saturated by 10%, you get
#70DCE1. If the color is desaturated by 10%, the color
#7ED6D9 is obtained.