blue glowing neuron on black

1024 × 768

Blue Lithium Symbol — Neutral

1280 × 1024

molecular structure in blue

1024 × 768

Biohazard Symbol — Orange, Dramatic

1600 × 1200

Lion Symbol on Sphere — Gray

1024 × 768

Biohazard Symbol — Blue, Dark, Digital Art, Black

1024 × 768

Half-Life 2 Logo — Black, Minimalist, Digital Art, Orange

1280 × 800

Blue Glowing Symbol — Mystical

1920 × 1080

Blue Power Symbol — Black

1920 × 1080

Astro Boy Character — Gray

1200 × 750

Interlocking Gender Symbols

1366 × 768

Staryu Star Symbol — Black

1920 × 1200