This five color palette built around dark cyan blue uses colors evenly spaced around the color wheel. The purple (R72G0B106) is another cool color but darker, deeper, and richer than the cyan. For warmth and energy throw in a dash of an almost neutral brownish orange (R140G93B0) and a dark red (R136G0B13). The greenish-yellow shade (R98G140B0) contrasts nicely with the purple.
You don't have to use these exact shades. Go a touch lighter or darker, or step one spot to the left or the right on the color wheel. These color combinations are just to help you find a suitable color palette using dark blue as the main component.


