Closest hex to #223333 is #233

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#233

223333

223333

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

contains 33

033 133 233 330 331 332 333 334 335 336 337 338 339 33a 33b 33c 33d 33e 33f 433 533 633 733 833 933 a33 b33 c33 d33 e33 f33

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