Matte Dark Blue needs lighter borders to hold detail.
A flat chip cannot show a coating.
Old paper gives it warmth.

Tints
#0b0b60
#232370
#3c3c80
#545490
#6d6da0
#8585b0
#9d9dbf
#b6b6cf
#cecedf
#e7e7ef
#ffffff
Shades
#0b0b60
#0a0a56
#09094d
#080843
#07073a
#060630
#040426
#03031d
#020213
#01010a
Triadic
#0b0b60
#600b0b
#0b600b
Monochromatic
#07073e
#09094f
#0b0b60
#37377d
#606098
Analogous
#0b3660
#0b0b60
#350b60
Complementary
#0b0b60
#60600b