The hex color #356CD3 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#CA932C. The grayscale version is
#7C7C7C. A 20% lighter version of the original color is
#689FFF, and Hex
#0239A0 is the 20% darker color. If the color is saturated by 10%, you get
#2E6ADC. If the color is desaturated by 10%, the color
#3C6ECA is obtained.