The hex color #a3f5f5 is a light color. The web-safe version is Hex
#99FFFF. A complementary color is
#5C0A0A. The grayscale version is
#DADADA. A 20% lighter version of the original color is
#D6FFFF, and Hex
#70C2C2 is the 20% darker color. If the color is saturated by 10%, you get
#9EF8F8. If the color is desaturated by 10%, the color
#A8F2F2 is obtained.