How do I make sure my blues don’t turn out purple?
When you want some blue in your design, always leave a minimum 30% difference in your Cyan and Magenta values.
100% C 100% M 0% Y 0% K
Blue and purple are close in the CMYK spectrum. Remember to use a low amount of magenta whenever you are using higher amounts of cyan to evade purple.
EXAMPLE: C-100 M-70 Y-0 K-0