How to determine complementary colors?
What are the different color models?

Determine Complementary Color

140 color names
216 web safe colors
2040 RAL colors
200 shades of gray

The complementary color of #B0421D is the color #1D8BB0

The HSL model was used to determine the complementary color

Input Color


HEX #B0421D
RGB 176, 66, 29
CMYK 0%, 63%, 84%, 31%
HSL 15.1°, 71.71%, 40.2%

Complementary Color


HEX #1D8BB0
RGB 29, 139, 176
CMYK 84%, 21%, 0%, 31%
HSL 195.1°, 71.71%, 40.2%

Complementary color scheme

#1D8BB0
#421DB0
#B01D8B
#B0421D
#8BB01D