Closest hex to #9d151d is #912

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#912

9d151d

9d151d

contains 91

091 191 291 391 491 591 691 791 891 910 911 912 913 914 915 916 917 918 919 91a 91b 91c 91d 91e 91f 991 a91 b91 c91 d91 e91 f91

contains 12

012 112 120 121 122 123 124 125 126 127 128 129 12a 12b 12c 12d 12e 12f 212 312 412 512 612 712 812 912 a12 b12 c12 d12 e12 f12

contains 92

092 192 292 392 492 592 692 792 892 920 921 922 923 924 925 926 927 928 929 92a 92b 92c 92d 92e 92f 992 a92 b92 c92 d92 e92 f92