Closest hex to #b73d30 is #b43

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#b43

b73d30

b73d30

contains b4

0b4 1b4 2b4 3b4 4b4 5b4 6b4 7b4 8b4 9b4 ab4 b40 b41 b42 b43 b44 b45 b46 b47 b48 b49 b4a b4b b4c b4d b4e b4f bb4 cb4 db4 eb4 fb4

contains 43

043 143 243 343 430 431 432 433 434 435 436 437 438 439 43a 43b 43c 43d 43e 43f 443 543 643 743 843 943 a43 b43 c43 d43 e43 f43

contains b3

0b3 1b3 2b3 3b3 4b3 5b3 6b3 7b3 8b3 9b3 ab3 b30 b31 b32 b33 b34 b35 b36 b37 b38 b39 b3a b3b b3c b3d b3e b3f bb3 cb3 db3 eb3 fb3