Closest hex to #1557d7 is #15d

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#15d

1557d7

1557d7

contains 15

015 115 150 151 152 153 154 155 156 157 158 159 15a 15b 15c 15d 15e 15f 215 315 415 515 615 715 815 915 a15 b15 c15 d15 e15 f15

contains 5d

05d 15d 25d 35d 45d 55d 5d0 5d1 5d2 5d3 5d4 5d5 5d6 5d7 5d8 5d9 5da 5db 5dc 5dd 5de 5df 65d 75d 85d 95d a5d b5d c5d d5d e5d f5d

contains 1d

01d 11d 1d0 1d1 1d2 1d3 1d4 1d5 1d6 1d7 1d8 1d9 1da 1db 1dc 1dd 1de 1df 21d 31d 41d 51d 61d 71d 81d 91d a1d b1d c1d d1d e1d f1d