Blue Hour palette
Brindle Bookshop
Five stops tuned to sit together without fighting — #004569 ink anchors the set, #6eb4e5 opens it up, and #006ea3, #2f89c0, #5298c7 cross the middle in a tetradic arrangement. Brindle Bookshop suits newsletters where the header, links, and footers share one voice. The darkest and lightest stops clear AA as a text pair.
skybluehourfive-stophigh-contrast
#004569
#006ea3
#2f89c0
#5298c7
#6eb4e5
The generator opens with #004569 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.