Closest hex to #122dcd is #13c

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#13c

122dcd

122dcd

contains 13

013 113 130 131 132 133 134 135 136 137 138 139 13a 13b 13c 13d 13e 13f 213 313 413 513 613 713 813 913 a13 b13 c13 d13 e13 f13

contains 3c

03c 13c 23c 33c 3c0 3c1 3c2 3c3 3c4 3c5 3c6 3c7 3c8 3c9 3ca 3cb 3cc 3cd 3ce 3cf 43c 53c 63c 73c 83c 93c a3c b3c c3c d3c e3c f3c

contains 1c

01c 11c 1c0 1c1 1c2 1c3 1c4 1c5 1c6 1c7 1c8 1c9 1ca 1cb 1cc 1cd 1ce 1cf 21c 31c 41c 51c 61c 71c 81c 91c a1c b1c c1c d1c e1c f1c