Monochrome palette
Indigo Gallery
Five stops tuned to sit together without fighting — #105000 ink anchors the set, #78c36a opens it up, and #1f7e00, #3f9a2d, #5da74f cross the middle in a complementary arrangement. Indigo Gallery suits book covers that read at thumbnail size. The darkest and lightest stops clear AA as a text pair.
greenmonochromefive-stophigh-contrast
#105000
#1f7e00
#3f9a2d
#5da74f
#78c36a
The generator opens with #105000 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.