MasterOnce
HomeBlogHow-To
3 min readJun 14, 2026
MasterOnce

Contrast Check Quickly

Train your eye to spot low-contrast text fast.

Create a light background with three text colors.

Repeat by lowering opacity until it fails.

Note which combinations stay readable.

This drill prevents unreadable UI in production.

Good contrast is a habit, not luck.

Repetition trains that habit.

Avoid opacity below 70% on body text.

Use a simple two-color checkerboard to spot low contrast.

Try the repetition loop

Pick a SwiftUI concept and write it 50 times. Feel the pattern lock in.