Retro palette
River Crater
Five stops tuned to sit together without fighting — #005480 ink anchors the set, #80c4f7 opens it up, and #247db5, #4499d2, #64a8d9 cross the middle in a analogous arrangement. River Crater suits museum exhibition graphics with long sightlines. The darkest and lightest stops clear AA for large text.
skyretrofive-stop
#005480
#247db5
#4499d2
#64a8d9
#80c4f7
The generator opens with #005480 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.