The hex color #61e7f4 is a light color. The web-safe version is Hex
#66FFFF. A complementary color is
#9E180B. The grayscale version is
#BFBFBF. A 20% lighter version of the original color is
#94FFFF, and Hex
#2EB4C1 is the 20% darker color. If the color is saturated by 10%, you get
#58EBF9. If the color is desaturated by 10%, the color
#6AE3EF is obtained.