First, understand how color blindness determines what a person sees (and, in turn, how it affects your designs).

There are several different kinds of color blindness, which affect your ability to see red, yellow, and/or blue.

See the chart below for examples.

6. If you use your mouse wheel with your cursor on the color picker, it will slide up and down the hues.

Hold ⌥ Option and you’ll slide up and down the opacity instead.

5. In the color panel or color input, use ↑↓ arrows to nudge it lighter or darker.

Adding ⇧ Shift makes bigger jumps.

3. You can use real color names like “green” or “purple” in the color input.

I like using “lightblue” and “pink” to block out colored sections or do some rapid designing.

2. The eyedropper can be a crutch: it’s sometimes better to avoid it entirely to be more consistent.

Utilize the document colors panel, which shows all the colors used on every page in your current document.

Or make and use color variables.

1. Tap "I" to bring up the eyedropper without losing your current flow.

Did you know you can press & hold your mouse button to *preview* different colors instead of clicking around trying to find what you need?