- BMW Neptune Blue Metallic A852007–2014 · 5 Series
- Cadillac Neptune Blue Poly 94 (1962)1962
- GM Neptune Blue 941962
- Infiniti Neptune Blue BS31997–1999Also sold as Dark Blue · Harbor Blue Metallic
- Kia Neptune Blue B3A, SE22019–2027 · Soul, SeltosAlso sold as Medium Blue
- Lexus Neptune Blue 8R72003–2009Also sold as Dark Blue
- Lincoln Neptune Blue 4 (1965)1965
- Nissan Neptune Blue BS31996–1999 · 300ZX, Maxima, Pathfinder, QuestAlso sold as Dark Blue
- Porsche Neptune Blue R5E2010–2026 · TaycanAlso sold as Umber Metallic
- Suzuki Neptune Blue 24P1986–1988
- Toyota Neptune Blue 8R72004–2018Also sold as Dark Blue
- Volkswagen Neptune Blue L50K1967–1978 · VW Bus
- Volkswagen Neptune Blue LXS02010–2011 · RoutanAlso sold as Deep Water Blue