The hex color #02858b is a dark color. The web-safe version is Hex
#009999. A complementary color is
#FD7A74. The grayscale version is
#5B5B5B. A 20% lighter version of the original color is
#35B8BE, and Hex
#005258 is the 20% darker color. If the color is saturated by 10%, you get
#008990. If the color is desaturated by 10%, the color
#0B8186 is obtained.