Creating a color palette is easier when you start with one main color and build around it. Try using complementary or analogous colors, then assign clear roles to each color—background, primary, secondary, and accent.
Also check contrast and test the palette in the actual design instead of judging the colors individually.
If you need ideas to get started, a color palette maker can help generate combinations that you can refine manually.
What’s your usual method for creating a color palette?