The hex color #34f2d1 is a light color. The web-safe version is Hex
#33FFCC. A complementary color is
#CB0D2E. The grayscale version is
#A8A8A8. A 20% lighter version of the original color is
#67FFFF, and Hex
#01BF9E is the 20% darker color. If the color is saturated by 10%, you get
#28F9D5. If the color is desaturated by 10%, the color
#40EBCD is obtained.