Primary brand colors are used for elements that must reflect Marvel’s brand. Each color has a few shades available which are used for a variety of different purposes both within the product and in marketing.
Grey colors are used for text, backgrounds, lines and borders. Smoke and Snow have two darker shades, which are used for icons and backgrounds.
The main UI colors are used for action buttons, alert messages, and form elements. Input fields, for example, can get positive and negative feedback, whereas alert messages can have warning feedback.