Find the dominant relationship
Identify the largest colour area and the smaller colour that competes with it. Ask whether that competition is useful. Simplify by changing the frame before changing every hue in an editor.
Separate colour and brightness
View a temporary monochrome version to inspect tonal structure. Return to colour and see what it adds. A palette can be attractive while hiding a weak distribution of light and dark.
Keep a consistent series
Compare skin tones, neutrals, and recurring objects across images. Adjust with the series in view so each photograph belongs to the same visual world without erasing genuine changes of light.