Closest hex to #1B0130 is #203

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#
#203

1B0130

1B0130

contains 20

020 120 200 201 202 203 204 205 206 207 208 209 20a 20b 20c 20d 20e 20f 220 320 420 520 620 720 820 920 a20 b20 c20 d20 e20 f20

contains 03

003 030 031 032 033 034 035 036 037 038 039 03a 03b 03c 03d 03e 03f 103 203 303 403 503 603 703 803 903 a03 b03 c03 d03 e03 f03

contains 23

023 123 223 230 231 232 233 234 235 236 237 238 239 23a 23b 23c 23d 23e 23f 323 423 523 623 723 823 923 a23 b23 c23 d23 e23 f23