Start out with two colours for your core brand, these can reflect the message you sell. Then add 1-2 secondary colours, think of these as accent colours that are used across promotional material and website. Finally, don't just select black and white as your neutral colours. You could do – black, navy, dark grey, deep green, dark purple, brown. Or pick lighter colours like – white, cream, light grey, and any other pastels colours you can dream of. Just make sure that the combination of colours is chosen with accessibility in mind.