Colour wheel
#CF644C#8A8736#6685B6
3 colours, about 11 pots with shades and highlights
Drag the wheel to turn the scheme. Drag one colour's ring in or out to make just that colour darker or lighter, and use the slider under a colour to make just that one more or less colourful. Up to 5 colours.
Or start from a ready-made scheme
Schemes built from paints people actually use, and every colour is a real pot. Search by name, by what you are painting, or just look.
Add the rest of the model
A colour scheme gives you the colours that have to work together: the armour, the cloak, the heraldry. It cannot give you the leather, the metal or the bone, because those are not chosen for harmony; they are what the model is made of. Add the ones yours has and they go into the same list of paints.
Free, and no account needed.
Special paints
Off by default. These need a particular technique: a drybrush paint cannot be used as a base coat.