Industrial palette
Opal Inn
From #004958 ink through #00748a, #318fa6, #549db0 to #70b9cd light, Opal Inn is a tetradic progression that holds together at any size. Use it for indie game interfaces with a strong day-night rhythm. The darkest and lightest stops clear AA as a text pair.
cyanindustrialfive-stophigh-contrast
#004958
#00748a
#318fa6
#549db0
#70b9cd
The generator opens with #004958 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.