The hex color #3da2c5 is a light color. The web-safe version is Hex
#3399CC. A complementary color is
#C25D3A. The grayscale version is
#8C8C8C. A 20% lighter version of the original color is
#70D5F8, and Hex
#0A6F92 is the 20% darker color. If the color is saturated by 10%, you get
#35A4CB. If the color is desaturated by 10%, the color
#45A0BF is obtained.