Closest hex to #bb0022 is #b02

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#b02

bb0022

bb0022

contains b0

0b0 1b0 2b0 3b0 4b0 5b0 6b0 7b0 8b0 9b0 ab0 b00 b01 b02 b03 b04 b05 b06 b07 b08 b09 b0a b0b b0c b0d b0e b0f bb0 cb0 db0 eb0 fb0

contains 02

002 020 021 022 023 024 025 026 027 028 029 02a 02b 02c 02d 02e 02f 102 202 302 402 502 602 702 802 902 a02 b02 c02 d02 e02 f02

contains b2

0b2 1b2 2b2 3b2 4b2 5b2 6b2 7b2 8b2 9b2 ab2 b20 b21 b22 b23 b24 b25 b26 b27 b28 b29 b2a b2b b2c b2d b2e b2f bb2 cb2 db2 eb2 fb2