The hex color #1ee9f0 is a light color. The web-safe version is Hex
#33FFFF. A complementary color is
#E1160F. The grayscale version is
#A8A8A8. A 20% lighter version of the original color is
#51FFFF, and Hex
#00B6BD is the 20% darker color. If the color is saturated by 10%, you get
#10F0F7. If the color is desaturated by 10%, the color
#2CE2E9 is obtained.