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 #121C28 is the color #281E12

The HSL model was used to determine the complementary color

Input Color


HEX #121C28
RGB 18, 28, 40
CMYK 55%, 30%, 0%, 84%
HSL 212.73°, 37.93%, 11.37%

Complementary Color


HEX #281E12
RGB 40, 30, 18
CMYK 0%, 25%, 55%, 84%
HSL 32.73°, 37.93%, 11.37%

Complementary color scheme

#281E12
#1C2812
#12281E
#121C28
#1E1228