Use navy blue eyeliner.It’s super wearable in a day and at night. Midnight-blue tones emphasize the light flecks in brown eyes.
Use copper eyeliner that will make your blue eyes appear even bluer.
Accentuate the blue amidst the gray-scale with a contrasty vivid red-brown.
Emerald bring out the green tones in hazel eyes.
The red undertones in a deep plum will enhance your natural verdant hues, while still feeling totally wearable.