Petrol on ivory
13.9 : 1 ✓

Amber on petrol
8.4 : 1 ✓

Teal on ivory
4.6 : 1 ✓ (min)

Amber on ivory
1.7 : 1 ✗ fill only

Teal on petrol
3.0 : 1 ✗

Ivory on orange
3.3 : 1 · display only