The hex color #a7e4e4 is a light color. The web-safe version is Hex
#99CCCC. A complementary color is
#581B1B. The grayscale version is
#D0D0D0. A 20% lighter version of the original color is
#DAFFFF, and Hex
#74B1B1 is the 20% darker color. If the color is saturated by 10%, you get
#A3E6E6. If the color is desaturated by 10%, the color
#ABE2E2 is obtained.