Standard SOP for color usage with ACSS:

• Base – is used for Text colors etc.
• Primary – Used CTA, etc.
• Secondary – Complimentary of Primary, if needed 
• Accent – Least used color for highlights if needed
• Action – Variation of Primary to adjust for A11y contrast. Use for links and buttons.

Primary & Action should account for 60% of color usage.

Secondary should account for 30% of color usage. 

Accent should only account for 10% of color usage.