Closest hex to #e23107 is #d30

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#d30

e23107

e23107

contains d3

0d3 1d3 2d3 3d3 4d3 5d3 6d3 7d3 8d3 9d3 ad3 bd3 cd3 d30 d31 d32 d33 d34 d35 d36 d37 d38 d39 d3a d3b d3c d3d d3e d3f dd3 ed3 fd3

contains 30

030 130 230 300 301 302 303 304 305 306 307 308 309 30a 30b 30c 30d 30e 30f 330 430 530 630 730 830 930 a30 b30 c30 d30 e30 f30

contains d0

0d0 1d0 2d0 3d0 4d0 5d0 6d0 7d0 8d0 9d0 ad0 bd0 cd0 d00 d01 d02 d03 d04 d05 d06 d07 d08 d09 d0a d0b d0c d0d d0e d0f dd0 ed0 fd0