The hex color #43d9df is a light color. The web-safe version is Hex
#33CCCC. A complementary color is
#BC2620. The grayscale version is
#A9A9A9. A 20% lighter version of the original color is
#76FFFF, and Hex
#10A6AC is the 20% darker color. If the color is saturated by 10%, you get
#39DEE4. If the color is desaturated by 10%, the color
#4DD4DA is obtained.